Ci/feat/terragrunt multi module

[nischalstha9]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (please specify)

Related Issue

• There was no option to run terragrunt workflow to update secrets in AWS Secret Manager.
• The terragrunt apply stage does not run automatically after plan.
• There is no review based deployment so anyone is able to deploy infrastructure code.

Describe this PR

This PR adds feature to run terragrunt workflow on different directory with environment based plan and apply stage and GH review based deployment for security purpose.
You can run plan workflow on following modules and after it success, it will auto trigger apply module:

• purgeable/ecs/
• non-purgeable/extras/

This PR too adds feature of review based deployment utilizing GitHub Environments. The plan and apply stage are on separate workflow. When the plan workflow (terragrunt plan) completes with review, the apply workflow runs automatically and waits for review to run terragrunt apply.
Closes #6739

[dakotabenjamin]

Huge number of merge conflicts here that will make it difficult for me to review. Can we also discuss over a call the background of this PR and intentions for merging into the fastapi branch?

[nischalstha9]

@dakotabenjamin I have rebased and now there are only changes that need review.
If you are having any kind of confusion or want to discuss this over a call I am happy to attend it. Do invite me at your preferred time.

[dakotabenjamin]

Looks good! Just needs two small changes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud