[Swift projection tooling] Add comprehensive e2e testing of symbol retrieval and preprocessing

[matouskozak]

Currently, there are 3 components (SwiftAbiParser, TbdParser, Swift5Demangler) responsible for the retrieval and preprocessing of Swift symbols used for subsequent bindings generation.

These components are tested very scarcely, and we often encounter issue where certain symbols are not handled properly.

To ensure proper functionality, we should consider adding a comprehensive testing suit which would test correct functionality across (all) Apple system frameworks (SwiftCore, SwiftUI, StoreKit, etc.).