Add a Github action to run GoLang unittests.

.github/workflows/test-go.yaml

@@ -0,0 +1,31 @@
+# A basic workflow for Go
+name: test-go
+on: [push]
+defaults:
+  run:
+    shell: bash -ieo pipefail {0}
+jobs:
+  test:
+    name: golang test & build
+    # Must run on github hosted runners
+    runs-on: [ubuntu-20.04]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '1.19.2' # The Go version to download (if necessary) and use.
+      - run: go test ./...
+        working-directory: app
+      - run: go build ./..
+        working-directory: app
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
+          # https://github.com/golangci/golangci-lint/releases
+          version: v1.50
+          # These options work around the errors in this issue
+          # https://github.com/golangci/golangci-lint-action/issues/244
+          skip-pkg-cache: true
+          skip-build-cache: true
+        working-directory: app