Add gh actions to do basic pre-commit check

.github/workflows/pre-commit.yml

@@ -0,0 +1,20 @@
+name: Pre-Commit
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Run pre-commit test
+      run: |
+        curl https://pre-commit.com/install-local.py | python3 -
+        curl -Lo ./terraform-docs https://github.com/terraform-docs/terraform-docs/releases/download/v0.9.1/terraform-docs-v0.9.1-$(uname | tr '[:upper:]' '[:lower:]')-amd64
+        chmod +x ./terraform-docs
+        sudo mv ./terraform-docs /usr/bin/terraform-docs
+        /home/runner/bin/pre-commit --version
+        terraform-docs --version
+        /home/runner/bin/pre-commit run -a