Feat/terraform workflow target

[Sunny-Mor]

What

• Introduced support for Terraform targeted destroy in the workflow.
• Added a reusable caller.yml file to invoke Terraform workflows more modularly.
• Enabled flexible input using target_file for scoped resource destruction.
• Added relevant documentation to explain how caller.yml and targeted destroy work.

Why

• To allow safe, targeted resource-level destruction via GitHub Actions.
• To improve workflow modularity and reusability using a caller pattern.
• To support multi-module and multi-environment infra operations more cleanly.
• To enhance clarity and reduce onboarding time with up-to-date usage documentation.

References

• 📄 Reusable Workflows - GitHub Docs
• 📄 Terraform Targeting