Updates token holder extension to match erc-7590.

[steven2308]

Also improves interfaces naming and comments.

Checklist

• Verified code additions
• Updated NatSpec comments (if applicable)
• Regenerated docs
• Ran prettier
• Added tests to fully cover the changes

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PR-Codex overview

Detailed summary

• This PR focuses on the implementation of the IERC7590 interface.
• Notable changes include:
  • Renaming of IRMRKTokenHolder to IERC7590.
  • Addition of IERC7590 interface with methods for transferring ERC-20 tokens and retrieving balances.
  • Update of related code and documentation.

The following files were skipped due to too many changes: docs/RMRK/extension/tokenHolder/IERC7590.md, docs/RMRK/extension/tokenHolder/RMRKTokenHolder.md, contracts/RMRK/extension/tokenHolder/RMRKTokenHolder.sol, test/extensions/tokenHolder.ts

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