update issue template (#367)

Co-authored-by: alex chow <zhouchuanglin@gmail.com>

.github/ISSUE_TEMPLATE/10_bug_report.yml

@@ -0,0 +1,64 @@
+name: 🐞 Bug Report
+description: File a bug/issue
+title: "[BUG] <title>"
+labels: [bug]
+body:
+- type: checkboxes
+  attributes:
+    label: Is there an existing issue for this?
+    description: Please search to see if an issue already exists for the bug you encountered ([BootstrapBlazor/issues](https://github.com/dotnetcore/BootstrapBlazor/issues?q=is%3Aissue)).
+    options:
+    - label: I have searched the existing issues
+      required: true
+- type: textarea
+  attributes:
+    label: Describe the bug
+    description: A clear and concise description of what the bug is.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Expected Behavior
+    description: A clear and concise description of what you expected to happen.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Steps To Reproduce
+    description: |
+      We ❤ code! Point us to a [minimalistic project which reproduces this issue (repro)](https://github.com/dotnet/aspnetcore/blob/main/docs/repro.md) hosted in a public GitHub repo.
+      
+      We will close this issue if:
+      - The repro project you share with us is complex. We can't investigate custom projects, so don't point us to such, please.
+      - If we will not be able to repro the behavior you're reporting.
+      - If the repro project is attached as a `.zip` file.
+      - If the GitHub repro project is set to `Private`.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Exceptions (if any)
+    description: Include the exception you get when facing this issue.
+    placeholder: 
+  validations:
+    required: false
+- type: input
+  attributes:
+    label: .NET Version 
+    description: |
+      Run `dotnet --version`
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Anything else?
+    description: |
+      - ASP.NET Core version:
+      - The IDE (VS / VS Code/ VS4Mac) you're running on, and its version:
+      - Include the output of `dotnet --info`:
+
+      Links? References? Anything that will give us more context about the issue you are encountering!
+
+      Tip: You can attach images or log files by clicking this area to highlight it and then dragging files in.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/20_feature_request.yml

@@ -0,0 +1,31 @@
+name: 💡 Feature Request
+description: Suggest an idea for this project
+body:
+- type: checkboxes
+  attributes:
+    label: Is there an existing issue for this?
+    description: Please search to see if an issue already exists for the feature you are requesting. (https://github.com/dotnetcore/BootstrapBlazor/issues).
+    options:
+    - label: I have searched the existing issues
+      required: true
+- type: textarea
+  attributes:
+    label: Is your feature request related to a problem? Please describe the problem.
+    description: A clear and concise description of what the problem is.
+    placeholder: I am trying to do [...] but [...]
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Describe the solution you'd like
+    description: |
+      A clear and concise description of what you want to happen. Include any alternative solutions you've considered.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Additional context
+    description: |
+      Add any other context or screenshots about the feature request here.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/30_unit_test.yml

@@ -0,0 +1,13 @@
+name: 🧪 Test
+description: Unit test for this project
+title: "test: <title>"
+labels: [test]
+assignees:
+  - argozhang
+body:
+- type: textarea
+  attributes:
+    label: Which class is this unit test associated with?
+    description: Add unit test for code coverage.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,28 +0,0 @@
----
-name: 🐞 Bug report
-about: Create a report about something that is not working
----
-
-
-### Describe the bug
-A clear and concise description of what the bug is.
-
-### To Reproduce
-<!--
-We ❤ code! Point us to a minimalistic repro project hosted in a GitHub repo.
-For a repro project, create a new ASP.NET Core project using the template of your your choice, apply the minimum required code to result in the issue you're observing.
-
-We will close this issue if:
-- the repro project you share with us is complex. We can't investigate custom projects, so don't point us to such, please.
-- if we will not be able to repro the behavior you're reporting
--->
-
-### Exceptions (if any)
-<!-- 
-Include the exception you get when facing this issue
--->
-
-### Further technical details
-- BootstrapBlazor version
-- Include the output of `dotnet --info`
-- The IDE (VS / VS Code/ VS4Mac) you're running on, and its version

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,14 +0,0 @@
----
-name: 💡 Feature request
-about: Suggest an idea for this project
----
-
-### Is your feature request related to a problem? Please describe.
-A clear and concise description of what the problem is.
-Example: I am trying to do [...] but [...]
-
-### Describe the solution you'd like
-A clear and concise description of what you want to happen. Include any alternative solutions you've considered.
-
-### Additional context
-Add any other context or screenshots about the feature request here.

.github/workflows/auto_assign_milestone.yml

@@ -0,0 +1,15 @@
+name: 'Auto Milestone Assign'
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  assign-milestone:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: zoispag/action-assign-milestone@v1.1.0
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          milestone: "${{ secrets.MILESTONE_VERSION }}"