[Refactor] Add src-core as the independent lib to any stack

[maidh91]

Summary

• Add src-core directory to contain Rust only code to handle all business logic
• src-tauri contain commands only and setup to build desktop apps
• Directory structure

  wealthfolio/
  ├── src                   # React for frontend
  ├── src-tauri          # Tauri to build desktop apps
  ├── src-core          # Rust for backend

=> src-core is independent now, and can be reused in any tool (not just Tauri)

File changes

• Most of the files are just moved from src-tauri to src-core
• All dependencies (except tauri ones) are moved from src-tauri/Cargo.toml to src-core/Cargo.toml
• Refactor all commands in src-tauri into a single place

[maidh91]

Hi @afadil

Could you please review this PR? This is only for refactoring to make the code cleaner.

Thanks!

[maidh91]

Hi @afadil

I have just rebased with latest main, can you review pls?

[afadil]

Merged! Thank @maidh91