Add automated GitHub release workflow

Author: pardeike

.github/workflows/release.yml

@@ -0,0 +1,75 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out source
+        uses: actions/checkout@v4
+
+      - name: Set up .NET 10
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "10.0.x"
+
+      - name: Validate tag matches project version
+        shell: bash
+        run: |
+          project_version="$(grep -oPm1 '(?<=<Version>)[^<]+' DecompilerServer.csproj)"
+          tag_version="${GITHUB_REF_NAME#v}"
+
+          if [[ -z "$project_version" ]]; then
+            echo "Could not read <Version> from DecompilerServer.csproj"
+            exit 1
+          fi
+
+          if [[ "$project_version" != "$tag_version" ]]; then
+            echo "Tag version '$tag_version' does not match project version '$project_version'"
+            exit 1
+          fi
+
+      - name: Build release
+        run: dotnet build DecompilerServer.sln -c Release
+
+      - name: Run tests
+        run: dotnet test Tests/Tests.csproj -c Release --no-build
+
+      - name: Publish release output
+        run: dotnet publish DecompilerServer.csproj -c Release -o out/publish --no-build
+
+      - name: Package release artifacts
+        shell: bash
+        run: |
+          asset_base="DecompilerServer-${GITHUB_REF_NAME}"
+          tarball="${asset_base}.tar.gz"
+          zipfile="${asset_base}.zip"
+
+          tar -C out -czf "$tarball" publish
+          (cd out && zip -qr "../$zipfile" publish)
+
+          sha256sum "$tarball" > "${tarball}.sha256"
+          sha256sum "$zipfile" > "${zipfile}.sha256"
+
+      - name: Create GitHub release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            DecompilerServer-${{ github.ref_name }}.tar.gz
+            DecompilerServer-${{ github.ref_name }}.tar.gz.sha256
+            DecompilerServer-${{ github.ref_name }}.zip
+            DecompilerServer-${{ github.ref_name }}.zip.sha256
+          generate_release_notes: true
+          fail_on_unmatched_files: true