housekeeping: Convert to using GitHub actions

.github/ISSUE_TEMPLATE/bug-report.yml

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+name: Bug Report
+description: Create a report to help us improve
+title: "[Bug]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Please note although we can't commit to any timeline, priority will be given to those who are [Contributors](https://github.com/reactiveui/ReactiveUI#contribute ) to the project.
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the bug 🐞
+      description: A clear and concise description of what the bug is.
+      value: "A bug happened!"
+    validations:
+      required: true
+  - type: textarea
+    id: reproduce-steps
+    attributes:
+      label: Step to reproduce
+      description: "Steps to reproduce the behavior:"
+      value: |
+        1. Go to '...'
+        2. Click on '....'
+        3. Scroll down to '....'
+        4. See error
+    validations:
+      required: true
+  - type: input
+    id: reproduce-repository
+    attributes:
+      label: Reproduction repository
+      description: "Simple repository representing the bug"
+      placeholder: https://github.com/reactiveui/refit
+      value: |
+        https://github.com/reactiveui/refit
+    validations:
+      required: false
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: A clear and concise description of what you expected to happen.
+      value: This should happen...
+    validations:
+      required: true
+  - type: textarea
+    id: screenshots
+    attributes:
+      label: Screenshots 🖼️
+      description: If applicable, add screenshots to help explain your problem.
+    validations:
+      required: false
+  - type: dropdown
+    id: ide
+    attributes:
+      label: IDE
+      multiple: true
+      options:
+        - Visual Studio 2022
+        - Visual Studio 2019
+        - Visual Studio 2017
+        - Visual Studio for Mac
+        - Rider Windows
+        - Rider macOS
+        - Visual Studio Code
+  - type: input
+    id: operating-system
+    attributes:
+      label: Operating system
+      description: Windows, Linux, Mac OS...
+    validations:
+      required: false
+  - type: input
+    id: system-version
+    attributes:
+      label: Version
+      description: Version and distribution (if applicable)
+    validations:
+      required: false
+  - type: input
+    id: device
+    attributes:
+      label: Device
+      description: Device e.g. iPhone 6
+    validations:
+      required: false
+  - type: input
+    id: refit-version
+    attributes:
+      label: Refit Version
+      description: e.g. 15.1.1
+    validations:
+      required: false
+  - type: textarea
+    id: additional-information
+    attributes:
+      label: Additional information ℹ️
+      description: Add any other information about the problem here.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Questions
+    url: https://github.com/reactiveui/refit/discussions
+    about: 'For general questions about Refit, ask in the GitHub discussions'
+  - name: Chat
+    url: https://www.reactiveui.net/slack
+    about: 'Our slack chat community invite'

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: feature request
+assignees: ''
+
+---
+
+<!--
+Please note although we can't commit to any timeline, priority will be given to those who are [Contributors](https://github.com/reactiveui/ReactiveUI#contribute ) to the project.
+
+If this is a question please ask on [StackOverflow](https://stackoverflow.com/questions/tagged/reactiveui).
+-->
+
+**Is your feature request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. -->
+
+
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen. -->
+
+
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+
+
+**Describe suggestions on how to achieve the feature**
+<!-- A clear description to how to achieve the feature. -->
+
+
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here. -->

.github/workflows/ci-build.yml

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+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+env:
+  productNamespacePrefix: "Refit"
+
+jobs:
+  build:
+    uses: reactiveui/actions-common/.github/workflows/workflow-common-setup-and-build.yml@main
+    with:
+      configuration: Release
+      productNamespacePrefix: "Refit"
+      useVisualStudioPreview: false
+      useMauiCheckDotNetTool: false

.github/workflows/lock.yml

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+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+concurrency:
+  group: lock
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v4
+        with:
+          github-token: ${{ github.token }}
+          issue-inactive-days: '14'
+          pr-inactive-days: '14'
+          issue-comment: >
+            This issue has been automatically locked since there
+            has not been any recent activity after it was closed.
+            Please open a new issue for related bugs.
+          pr-comment: >
+            This pull request has been automatically locked since there
+            has not been any recent activity after it was closed.
+            Please open a new issue for related bugs.

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    branches: [ main ]
+
+env:
+  productNamespacePrefix: "Refit"
+
+jobs:
+  release:
+    uses: reactiveui/actions-common/.github/workflows/workflow-common-release.yml@main
+    with:
+      configuration: Release
+      productNamespacePrefix: "Refit"
+      useVisualStudioPreview: false
+      useMauiCheckDotNetTool: false
+    secrets:
+      SIGN_CLIENT_USER_ID: ${{ secrets.SIGN_CLIENT_USER_ID }}
+      SIGN_CLIENT_SECRET: ${{ secrets.SIGN_CLIENT_SECRET }}
+      SIGN_CLIENT_CONFIG: ${{ secrets.SIGN_CLIENT_CONFIG }}
+      NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}