CI: add go

.github/workflows/go.yml

@@ -0,0 +1,40 @@
+name: Go
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: [ '1.17', '1.18', '1.19' ]
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Build
+      run: go build -v ./...
+      working-directory: server
+
+    - name: Test
+      run: go test -v ./...
+      working-directory: server
+
+    - name: Run coverage
+      run: go test -race -coverprofile=coverage.out -covermode=atomic
+      working-directory: server
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3