Add automated multi-platform release pipeline

.github/workflows/release.yml

@@ -0,0 +1,73 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        runtime:
+          - linux-x64
+          - linux-arm64
+          - linux-arm
+          - win-x64
+          - osx-x64
+          - osx-arm64
+
+    steps:
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 8.0.x
+
+      - name: Publish
+        run: |
+          dotnet publish src/ErsatzTV/ErsatzTV.csproj \
+            -c Release \
+            -r ${{ matrix.runtime }} \
+            --self-contained true \
+            -o publish/${{ matrix.runtime }}
+
+      - name: Zip build
+        run: |
+          cd publish
+          zip -r ersatztv-${{ matrix.runtime }}.zip ${{ matrix.runtime }}
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ersatztv-${{ matrix.runtime }}
+          path: publish/ersatztv-${{ matrix.runtime }}.zip
+
+
+  release:
+
+    needs: build
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          merge-multiple: true
+
+      - name: Create release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: artifacts/*.zip