Add gh actions

.github/workflows/ci.yaml

@@ -0,0 +1,27 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - '*'
+
+permissions:
+  contents: read
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Setup Terraform
+        uses: hashicorp/setup-terraform@b9cd54a3c349d3f38e8881555d616ced269862dd # v3.1.2
+      - name: Lint Terraform
+        run: terraform fmt -check
+      - name: Validate Terraform
+        run: terraform validate
+      - name: Check bash
+        run: shellcheck ./enforce.sh