[GitHub] Add prefix and label in issue template (#652)

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -1,5 +1,7 @@
 name: 🐛 Bug Report
 description: Create a report to help us reproduce and fix the bug
+title: "[BUG]: "
+labels: [bug]
 
 body:
 - type: markdown

.github/ISSUE_TEMPLATE/documentation.yml

@@ -1,5 +1,7 @@
 name: 📚 Documentation
 description: Report an issue related to https://www.colossalai.org/
+title: "[DOC]: "
+labels: [documentation]
 
 body:
 - type: markdown

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,5 +1,7 @@
 name: 🚀 Feature request
 description: Suggest an idea for this project
+title: "[FEATURE]: "
+labels: [enhancement]
 
 body:
 - type: markdown

.github/ISSUE_TEMPLATE/proposal.yml

@@ -1,41 +1,43 @@
 name: 💥 Proposal
 description: Propose a non-trivial change to Colossal-AI
+title: "[PROPOSAL]: "
+labels: [enhancement]
 
 body:
-  - type: markdown
-    attributes:
-      value: |
-        Common reasons for proposals include:
+- type: markdown
+  attributes:
+    value: |
+      Common reasons for proposals include:
 
-        - Altering the infrastructure;
-        - Bumping a critical dependency's major version;
-        - A significant improvement in user-friendliness;
-        - Significant refactor;
-        - ...
+      - Altering the infrastructure;
+      - Bumping a critical dependency's major version;
+      - A significant improvement in user-friendliness;
+      - Significant refactor;
+      - ...
 
-        Please note this is not for feature request or bug template; such action could make us identify the issue wrongly and close it without doing anything.
+      Please note this is not for feature request or bug template; such action could make us identify the issue wrongly and close it without doing anything.
 
-        We give you maximum freedom to write an elaborated proposal illustrating why you think the change is beneficial for us, and what steps we should take to turn this into reality.
+      We give you maximum freedom to write an elaborated proposal illustrating why you think the change is beneficial for us, and what steps we should take to turn this into reality.
 
 
-  - type: textarea
-    attributes:
-      label: Proposal
-      description: A clear and concise description of what the proposal is.
-    validations:
-      required: true
+- type: textarea
+  attributes:
+    label: Proposal
+    description: A clear and concise description of what the proposal is.
+  validations:
+    required: true
 
-  - type: checkboxes
-    attributes:
-      label: Self-service
-      description: |
-        If you feel like you could contribute to this issue, please check the box below. This would tell us and other people looking for contributions that someone's working on it.
-        If you do check this box, please send a pull request within 7 days after a maintainer's approval so we can still delegate this to someone else.
+- type: checkboxes
+  attributes:
+    label: Self-service
+    description: |
+      If you feel like you could contribute to this issue, please check the box below. This would tell us and other people looking for contributions that someone's working on it.
+      If you do check this box, please send a pull request within 7 days after a maintainer's approval so we can still delegate this to someone else.
 
-        Proposals usually involve significant code changes, so please reach consensus with the maintainers before rushing to implement it, and make sure you follow the [Contributing Guidelines](https://github.com/hpcaitech/ColossalAI/blob/main/CONTRIBUTING.md).
-        This ensures that you don't waste your time and we don't waste ours reading the large diffs.
-      options:
-        - label: I'd be willing to do some initial work on this proposal myself.
+      Proposals usually involve significant code changes, so please reach consensus with the maintainers before rushing to implement it, and make sure you follow the [Contributing Guidelines](https://github.com/hpcaitech/ColossalAI/blob/main/CONTRIBUTING.md).
+      This ensures that you don't waste your time and we don't waste ours reading the large diffs.
+    options:
+      - label: I'd be willing to do some initial work on this proposal myself.
 
 
 - type: markdown