Add Gitea Actions workflow to build and attach Linux release binary

.gitea/workflows/release.yml

@@ -0,0 +1,40 @@
+name: release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-linux-amd64:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - uses: mlugg/setup-zig@v1
+        with:
+          version: 0.15.2
+
+      - name: Build libghostty-vt
+        run: make deps
+
+      - name: Build patterm
+        env:
+          GOOS: linux
+          GOARCH: amd64
+          CGO_ENABLED: 1
+        run: |
+          mkdir -p dist
+          go build -trimpath -ldflags="-s -w" \
+            -o dist/patterm-${{ github.ref_name }}-linux-amd64 \
+            ./cmd/patterm
+
+      - name: Attach binary to release
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: dist/patterm-${{ github.ref_name }}-linux-amd64