migrate CI config from Gitlab to Github

.github/workflows/build.yml

@@ -0,0 +1,32 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.20'
+
+      - uses: actions/checkout@v4
+
+      - name: Check formatting, unused modules and suspicious code
+        run: |
+          go fmt ./...
+          go mod tidy
+          git diff --exit-code
+          go vet ./...
+
+      - name: Build project
+        run: |
+          mkdir bin
+          GOBIN="$PWD/bin" CGO_ENABLED=0 go install ./...
+
+      - name: Upload artifacts
+        uses: actions/upload-artifacts@v4
+        with:
+          name: binaries
+          path: bin/