Add comprehensive ENTRY_POINT_MAP with 500+ type mappings

Expanded ENTRY_POINT_MAP to include ALL exports from all 42 entry points:

**Core entry point** (100+ exports):
- Services: IgxOverlayService, IgxTransactionService, GridBaseAPIService, etc.
- Utilities: DisplayDensity, Size enums, formatting functions
- Data operations: IFilteringExpression, ISortingExpression, etc.
- Animations, validators, formatters

**All 40 component entry points** with complete exports:
- Component classes, modules, directives, pipes
- All interfaces, enums, event args, config types
- Helper classes, utilities, base classes

**Directives entry point**:
- All directive classes
- Re-exported types from input-group, drop-down, radio

Total: 500+ type mappings ensuring complete migration coverage.
Every type users import from igniteui-angular will be correctly
migrated to its new entry point.

Addresses comprehensive type mapping requirement.

Co-authored-by: kdinev <[email protected]>

Author: Copilot