Added terraform-drifts.md file

docs/30.terraform-drifts.md

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+## [terraform drifts Workflow](https://github.com/clouddrove/github-shared-workflows/blob/master/.github/workflows/tfdrifts.yml)
+
+This workflow automates Terraform configuration drift detection by running terraform init/plan against your live infrastructure and signaling when resources have changed outside of code. The reusable workflow is stored at `.github/workflows/tfdrifts.yml` in the shared repo.
+
+**Key capabilities**:
+- Detect drift via terraform plan.
+- Works with AWS, Azure, or GCP (select with provider).
+
+#### Example
+```yaml
+name:  TF-Drift
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+  workflow_dispatch:
+jobs:
+  tf-lint:
+    uses: clouddrove/github-shared-workflows/.github/workflows/tfdrift.yml@master
+    with:  
+      working_directory:    #'./_example/complete/'
+      provider:             #aws
+      aws_region:           # AWS region
+    secrets:
+        AWS_ACCESS_KEY_ID:  # Specify AWS Access key ID
+        AWS_SECRET_ACCESS_KEY: # Specify AWS Secret Access key ID
+        AWS_SESSION_TOKEN:  # Specify Session ID
+```