.github: add golangci-lint and go test

.github/workflows/golangci-lint.yml

@@ -0,0 +1,24 @@
+name: golangci-lint
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - main
+  pull_request:
+permissions:
+  contents: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v2
+      - uses: actions/checkout@v2
+        with:
+          go-version: 1.17.x
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.44.2
+          only-new-issues: true

.github/workflows/test.yml

@@ -0,0 +1,22 @@
+on: [ pull_request ]
+name: unit tests
+jobs:
+  unit_tests:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: 1.17.x
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/go/pkg/mod      # Module download cache
+            ~/.cache/go-build # Build cache (Linux)
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+      - name: Test
+        run: go test ./... -v
+      - name: Check Format
+        run: '[ "$(gofmt -l ./ | wc -l)" -eq 0 ]'