enhancement (issue template): use form in issue template

.github/ISSUE_TEMPLATE/bug-report.yaml

@@ -0,0 +1,36 @@
+name: Bug Report
+description: As a User, I want to report a Bug.
+title: "Bug: "
+labels: ["kind/bug", "kafed"]
+assignees:
+- wu8685
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report!
+  - type: textarea
+    id: reproduce-step
+    attributes:
+      label: Minimal reproduce step
+      placeholder: a step by step guide for reproducing the bug.
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: What did you expect to see?
+    validations:
+      required: true
+  - type: textarea
+    id: actual
+    attributes:
+      label: What did you see instead
+    validations:
+      required: true
+  - type: textarea
+    id: version
+    attributes:
+      label: What is your KusionStack components and its version?
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/enhancement.yaml

@@ -0,0 +1,17 @@
+name: Enhancement
+description: As a KusionStack developer, I want to make an enhancement.
+title: "Enhancement: "
+labels: ["kind/feature", "kafed"]
+body:
+  - type: textarea
+    id: content
+    attributes:
+      label: What would you like to be added?
+    validations:
+      required: true
+  - type: textarea
+    id: reason
+    attributes:
+      label: Why is this needed?
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,37 @@
+name: Feature Request
+description: As a user, I want to request a New Feature on the product.
+title: "FeatureRequest: <title>"
+labels: ["kafed"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this feature request detail!
+  - type: textarea
+    id: reason
+    attributes:
+      label: "Is your feature request related to a problem? Please describe:"
+      placeholder: "A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]"
+    validations:
+      required: true
+  - type: textarea
+    id: description
+    attributes:
+      label: "Describe the feature you'd like:"
+      placeholder: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Describe alternatives you've considered
+      placeholder: A clear and concise description of any alternative solutions or features you've considered.
+    validations:
+      required: false
+  - type: textarea
+    id: details 
+    attributes:
+      label: Teachability, Documentation, Adoption, Migration Strategy 
+      placeholder: If you can, explain some scenarios how users might use this, situations it would be helpful in. Any API designs, mockups, or diagrams are also helpful. 
+    validations:
+      required: false