feat(workflow): add build workflow for FRP binaries

.gitea/workflows/build.yaml

@@ -0,0 +1,49 @@
+name: Build FRP Binaries
+
+on:
+  push:
+    branches:
+      - '**'
+    tags:
+      - '**'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Manual build tag'
+        required: false
+        default: 'manual'
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build and Package FRP
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+
+      - name: Set up dependencies
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y zip make gcc g++ upx
+
+      - name: Run build script
+        run: |
+          chmod +x ./package.sh
+          ./package.sh
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: frp-packages
+          path: release/packages