ci: add workflow for Go testing

.github/workflows/test-go.yaml

@@ -0,0 +1,18 @@
+name: Test Go
+on:
+  pull_request:
+  merge_group:
+jobs:
+  build:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-go@v4
+      with:
+        go-version-file: go.mod
+
+    - name: Run tests
+      run: make test
+      shell: bash

Makefile

@@ -1,5 +1,9 @@
 DYNAMIC_REGO_FOLDER=./rules/kubernetes/policies/dynamic
 
+.PHONY: test
+test:
+	go test ./...
+
 .PHONY: schema
 schema:
 	go run ./cmd/schema generate