- Rename stubLibrary to stubImportLibrary and add externalImportStubFiles property
- Create LibraryImportStubGenerator to generate combined stub files with @import-library annotation
- Update documentation to reflect new import library mechanism without @typephp-library annotation
- Modify build pipeline to exclude generated stub from input files and generate library import stubs
- Add TYPEPHP_LIBRARYNAME_IMPORT macros for importing functions from external libraries
- Update function definition entities to track importLibrary instead of library ownership
- Refactor preprocessing to detect @import-library annotation and manage external stub files
- Implement proper handling of imported functions with different macro prefixes in declarations
