Add Gitea Actions workflow for build and release

- Build and test on push to main and PRs
- Create multi-platform releases on version tags
- Supports Linux, macOS, and Windows (amd64 and arm64)

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitea/workflows/build.yml

@@ -0,0 +1,83 @@
+name: Build and Release
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.19'
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: go test -v ./...
+
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    if: startsWith(github.ref, 'refs/tags/v')
+    strategy:
+      matrix:
+        include:
+          - os: linux
+            arch: amd64
+            goos: linux
+            goarch: amd64
+          - os: linux
+            arch: arm64
+            goos: linux
+            goarch: arm64
+          - os: darwin
+            arch: amd64
+            goos: darwin
+            goarch: amd64
+          - os: darwin
+            arch: arm64
+            goos: darwin
+            goarch: arm64
+          - os: windows
+            arch: amd64
+            goos: windows
+            goarch: amd64
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.19'
+
+      - name: Build binary
+        env:
+          GOOS: ${{ matrix.goos }}
+          GOARCH: ${{ matrix.goarch }}
+          CGO_ENABLED: 0
+        run: |
+          if [ "${{ matrix.os }}" = "windows" ]; then
+            go build -o unhttpx-${{ matrix.os }}-${{ matrix.arch }}.exe -ldflags="-s -w" .
+          else
+            go build -o unhttpx-${{ matrix.os }}-${{ matrix.arch }} -ldflags="-s -w" .
+          fi
+
+      - name: Create Release
+        uses: actions/gitea-release-action@v1
+        with:
+          files: unhttpx-*
+          token: ${{ secrets.GITHUB_TOKEN }}