[Chore] Upgrade Angular From v12 to v16

[rahul-rocket]

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Summary by CodeRabbit

• New Features

  • Updated package names to scoped formats for better organization.
  • Added support for the "file-saver" library in the Angular project.

• Bug Fixes

  • Adjusted Bootstrap dependency to ensure compatibility.

• Documentation

  • Updated .gitignore to include Angular cache directory.

• Refactor

  • Changed form builder type from FormBuilder to UntypedFormBuilder across multiple components for improved flexibility.
  • Removed legacy browser support references from polyfills.

• Chores

  • Updated TypeScript configuration for improved compatibility and performance.
  • Reformatted various configuration files for better readability.
  • Adjusted CSS formatting for consistency across several components.