Migrate @data-driven-forms/common package from JavaScript to TypeScript.

Package Details:

• Package: @data-driven-forms/common
• Current size: 39 JS files, 3,944 lines of code
• Purpose: Common components, helpers, and utilities that support other packages
• Dependencies: Core library that other packages depend on
• Priority: HIGH - This is a foundation package that should be migrated first

Migration Tasks:

• Convert .js/.jsx files to .ts/.tsx
• Add proper TypeScript type definitions
• Update imports/exports to use TypeScript types
• Ensure all utility functions have proper type signatures
• Update build configuration if needed
• Run tests to ensure functionality is preserved
• Update any generated type definitions to source types

Technical Notes:

• TypeScript infrastructure already configured
• This package serves as foundation for other packages
• Must maintain backward compatibility
• Should be completed before migrating dependent packages

Repository: https://github.com/data-driven-forms/react-forms
Package Path: packages/common/