Add more github issue templates

.github/ISSUE_TEMPLATE/cleanup.md

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+---
+name: Cleanup 
+about: Cleaning up code, process, or technical debt, etc.
+labels: kind/cleanup
+
+---
+
+<!-- Please use this template while filing an issue to highlight technical debt to be paid down -->
+
+**What should be cleaned up or changed**:
+
+**Why is this needed**:
+

.github/ISSUE_TEMPLATE/documentation.md

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+---
+name: Documentation Request
+about: Suggest what should be documented in Sedna
+labels: kind/documentation
+
+---
+
+<!-- Please use this template for submitting documentation requests -->
+
+**What would you like to be documented**:
+
+**Why is this needed**:

.github/ISSUE_TEMPLATE/question.md

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+---
+name: Question
+about: Ask a question about using Sedna
+labels: kind/question
+
+---
+
+<!-- Please use this template for submitting questions -->
+
+