chore: add github action for validating terraform changes (#4)

.github/workflows/action.yml

@@ -0,0 +1,92 @@
+name: Validate Terraform 
+
+on:
+  pull_request:
+    paths:
+      - 'terraform/**'
+    branches:
+      - main
+
+defaults:
+  run:
+    working-directory: ./terraform
+
+env:
+  PM_API_URL: 'https://10.255.0.8:8006/api2/json'
+  tf_actions_working_dir: ./terraform
+
+jobs:
+  validate:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Terraform
+        uses: hashicorp/setup-terraform@v3
+
+      - name: Terraform init
+        id: init
+        run: |
+          terraform version
+          terraform init
+
+      - name: Terraform fmt
+        id: fmt
+        run: |
+          terraform fmt -check
+        continue-on-error: true
+
+      - name: Terraform validate
+        id: validate
+        run: |
+          terraform validate -no-color
+
+      - uses: actions/github-script@v7
+        if: github.event_name == 'pull_request'
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            // 1. Retrieve existing bot comments for the PR
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+            })
+            const botComment = comments.find(comment => {
+              return comment.user.type === 'Bot' && comment.body.includes('Terraform Format and Style')
+            })
+
+            // 2. Prepare format of the comment
+            const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
+            #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
+            #### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`
+            <details><summary>Validation Output</summary>
+
+            \`\`\`\n
+            ${{ steps.validate.outputs.stdout }}
+            \`\`\`
+
+            </details>
+
+            *Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`${{ env.tf_actions_working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;
+
+            // 3. If we have a comment, update it, otherwise create a new one
+            if (botComment) {
+              github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: botComment.id,
+                body: output
+              })
+            } else {
+              github.rest.issues.createComment({
+                issue_number: context.issue.number,
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                body: output
+              })
+            }