Enhance issue templates (open-mmlab#2776)

.github/ISSUE_TEMPLATE/1-bug-report.yml

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+name: "🐞 Bug report"
+description: "Create a report to help us reproduce and fix the bug"
+labels: bug
+title: "[Bug] "
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Note
+        For general usage questions or idea discussions, please post it to our [**Forum**](https://github.com/open-mmlab/mmcv/discussions)
+        Please fill in as **much** of the following form as you're able to. **The clearer the description, the shorter it will take to solve it.**
+
+  - type: checkboxes
+    attributes:
+      label: Prerequisite
+      description: Please check the following items before creating a new issue.
+      options:
+      - label: I have searched [Issues](https://github.com/open-mmlab/mmcv/issues) and [Discussions](https://github.com/open-mmlab/mmcv/discussions) but cannot get the expected help.
+        required: true
+      - label: The bug has not been fixed in the latest version(https://github.com/open-mmlab/mmcv).
+        required: true
+
+  - type: textarea
+    attributes:
+      label: Environment
+      description: |
+        Please run `python -c "from mmcv.utils import collect_env; print(collect_env())"` to collect necessary environment information and copy-paste it here.
+        You may add additional information that may be helpful for locating the problem, such as
+          - How you installed PyTorch \[e.g., pip, conda, source\]
+          - Other environment variables that may be related (such as `$PATH`, `$LD_LIBRARY_PATH`, `$PYTHONPATH`, etc.)
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Reproduces the problem - code sample
+      description: |
+        Please provide a code sample that reproduces the problem you ran into. It can be a Colab link or just a code snippet.
+      placeholder: |
+        ```python
+        # Sample code to reproduce the problem
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Reproduces the problem - command or script
+      description: |
+        What command or script did you run?
+      placeholder: |
+        ```shell
+        The command or script you run.
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Reproduces the problem - error message
+      description: |
+        Please provide the error message or logs you got, with the full traceback.
+
+        Tip: You can attach images or log files by dragging them into the text area..
+      placeholder: |
+        ```
+        The error message or logs you got, with the full traceback.
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Additional information
+      description: |
+        Tell us anything else you think we should know.
+
+        Tip: You can attach images or log files by dragging them into the text area.
+      placeholder: |
+        1. What's your expected result?
+        2. What dataset did you use?
+        3. What do you think might be the reason?
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Acknowledgement
+        Thanks for taking the time to fill out this report.
+
+        If you have already identified the reason, we strongly appreciate you creating a new PR to fix it [**Here**](https://github.com/open-mmlab/mmcv/pulls)!
+        Please refer to [**Contribution Guide**](https://mmcv.readthedocs.io/en/latest/community/contributing.html) for contributing.
+
+        Welcome to join our [**Community (TODO)**](https://mmcv.readthedocs.io/en/latest/contact.html) to discuss together. 👬

.github/ISSUE_TEMPLATE/2-feature_request.yml

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+name: 🚀 Feature request
+description: Suggest an idea for this project
+labels: [feature-request]
+title: "[Feature] "
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Note
+        For general usage questions or idea discussions, please post it to our [**Forum**](https://github.com/open-mmlab/mmcv/discussions)
+
+        Please fill in as **much** of the following form as you're able to. **The clearer the description, the shorter it will take to solve it.**
+
+  - type: textarea
+    attributes:
+      label: What is the feature?
+      description: Tell us more about the feature and how this feature can help.
+      placeholder: |
+        E.g., It is inconvenient when \[....\].
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Any other context?
+      description: |
+        Have you considered any alternative solutions or features? If so, what are they? Also, feel free to add any other context or screenshots about the feature request here.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Acknowledgement
+        Thanks for taking the time to fill out this report.
+
+        We strongly appreciate you creating a new PR to implement it [**Here**](https://github.com/open-mmlab/mmcv/pulls)!
+        Please refer to [**Contribution Guide**](https://mmcv.readthedocs.io/en/latest/community/contributing.html) for contributing.
+
+        Welcome to join our [**Community (TODO)**](https://mmcv.readthedocs.io/en/latest/contact.html) to discuss together. 👬

.github/ISSUE_TEMPLATE/3-documentation.yml

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+name: 📚 Documentation
+description: Report an issue related to the documentation.
+labels: "docs"
+title: "[Docs] "
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Note
+        For general usage questions or idea discussions, please post it to our [**Forum**](https://github.com/open-mmlab/mmcv/discussions)
+        Please fill in as **much** of the following form as you're able to. **The clearer the description, the shorter it will take to solve it.**
+
+  - type: textarea
+    attributes:
+      label: 📚 The doc issue
+      description: >
+        A clear and concise description the issue.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Suggest a potential alternative/fix
+      description: >
+        Tell us how we could improve the documentation in this regard.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Acknowledgement
+        Thanks for taking the time to fill out this report.
+
+        If you have already identified the reason, we strongly appreciate you creating a new PR to fix it [**here**](https://github.com/open-mmlab/mmcv/pulls)!
+        Please refer to [**Contribution Guide**](https://mmcv.readthedocs.io/en/latest/community/contributing.html) for contributing.
+
+        Welcome to join our [**Community(TODO)**](https://mmcv.readthedocs.io/en/latest/contact.html) to discuss together. 👬

.github/ISSUE_TEMPLATE/config.yml

@@ -1,9 +1,12 @@
 blank_issues_enabled: false
 
 contact_links:
-  - name: Common Issues
-    url: https://mmcv.readthedocs.io/en/latest/trouble_shooting.html
-    about: Check if your issue already has solutions
+  - name: 💬 Forum
+    url: https://github.com/open-mmlab/mmcv/discussions
+    about: Ask general usage questions and discuss with other mmcv community members
   - name: MMCV Documentation
     url: https://mmcv.readthedocs.io/en/latest/
     about: Check if your question is answered in docs
+  - name: 🌐 Explore OpenMMLab
+    url: https://openmmlab.com/
+    about: Get know more about OpenMMLab