try github action to build with cgo

.github/workflows/build-showbridge.yaml

@@ -0,0 +1,46 @@
+name: Build Go Program
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  cgo-action:
+    strategy:
+      matrix:
+        targets:
+          - linux-amd64
+          - linux-arm64
+          - windows-amd64
+          - darwin-amd64
+          - darwin-arm64
+    name: Build Go Program
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v5
+
+      - name: Setup Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: '1.25.3'
+
+      - name: Build go program
+        id: cgo-action
+        uses: go-cross/cgo-actions@v1
+        with:
+          dir: './cmd/showbridge'
+          targets: ${{ matrix.targets }}
+
+      - name: Print Output
+        id: output
+        run: echo "${{ steps.cgo-action.outputs.files }}"