Create release to run when RELEASE.md is changed

.github/workflows/build_release.yaml

@@ -0,0 +1,59 @@
+on:
+  push:
+    branches:
+      - main
+      - '*-stable'
+    paths:
+      - '.github/workflows/build_release.yaml'
+      - 'RELEASE.md'
+
+env:
+  RELEASE_NAME: SteamDeckTools
+  DOTNET_VERSION: '6.0.x'
+
+jobs:
+  build-and-release:
+    runs-on: windows-latest
+    permissions:
+      contents: write
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: ${{ env.DOTNET_VERSION }}
+    - name: Install dependencies
+      run: dotnet restore
+    - name: Set RELEASE_VERSION
+      shell: bash
+      run: |
+        majorVer=$(cat VERSION)
+        lastVer=$(git tag --sort version:refname --list "$majorVer.*" | tail -n1)
+        if [[ -n "$lastVer" ]]; then
+          newVer=(${lastVer//./ })
+          newVer[-1]="$((${newVer[-1]}+1))"
+          nextVer="${newVer[*]}"
+          nextVer="${nextVer// /.}"
+        else
+          nextVer="$majorVer.0"
+        fi
+        echo "MajorVer=$majorVer LastVer=$lastVer NextVer=$nextVer"
+        echo "RELEASE_VERSION=$nextVer" >> $GITHUB_ENV
+    - name: Build
+      run: dotnet build --configuration Release --output "${{ env.RELEASE_NAME }}-${{ env.RELEASE_VERSION }}/" "/property:Version=${{ env.RELEASE_VERSION }}"
+    - name: Test
+      run: dotnet test --no-restore --verbosity normal
+    - uses: vimtor/action-zip@v1
+      with:
+        files: ${{ env.RELEASE_NAME }}-${{ env.RELEASE_VERSION }}
+        dest: ${{ env.RELEASE_NAME }}-${{ env.RELEASE_VERSION }}.zip
+        recursive: true
+    - uses: ncipollo/release-action@v1
+      with:
+        tag: ${{ env.RELEASE_VERSION }}
+        artifacts: "*.zip"
+        prerelease: true
+        generateReleaseNotes: true
+        bodyFile: RELEASE.md