add go ci job

.github/workflows/relayer.yml

@@ -0,0 +1,65 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+          submodules: recursive
+
+    - name: Check jq
+      id: check_jq
+      run: jq --version
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.23'
+
+    - name: Install Foundry
+      uses: foundry-rs/foundry-toolchain@v1
+      with:
+          version: stable
+
+    - name: Show Forge version
+      run: forge --version
+
+    - name: Install abigen
+      run: go install github.com/ethereum/go-ethereum/cmd/abigen@v1.14.11
+
+    - name: Check abigen
+      run: abigen --version
+
+    - name: Install sszgen
+      run: go install github.com/ferranbt/fastssz/sszgen@v0.1.4
+
+    - name: Check sszgen
+      run: sszgen --help
+
+    - name: Install Mage
+      run: go install github.com/magefile/mage@v1.15.0
+
+    - name: Check mage
+      id: check_mage
+      run: mage --version
+
+    - name: Build
+      run: mage build
+
+    - name: Check if go contract bindings are up-to-date
+      run: git diff --exit-code ./relays/contracts || (echo "The contract bindings are not up-to-date against contracts." && exit 1)
+
+    - name: Test
+      run: mage test
+