Add EasyBit centralized swap integration

[divyam-eb]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Adds easybit as a centralized swap provider.

[paullinator]

Review Summary

Thanks for adding EasyBit as a swap provider! The implementation follows the established plugin patterns well. However, there are a few critical issues to address before merging.

Critical Issues

1. Plugin not registered in src/index.ts - The plugin needs to be imported and added to the plugins object:

   import { makeEasyBitPlugin } from './swap/central/easybit'
   
   const plugins = {
     // ... existing plugins
     easybit: makeEasyBitPlugin,
   }

2. Response status check order (line 276-278) - Check response.ok before parsing JSON

3. Missing JSON.parse error handling (line 492) - Wrap in try-catch

4. Incorrect reverse quote fallback (line 390) - Don't fall back to receive amount

5. Unused import (line 13) - Remove EdgeMemo

See inline comments for specific issues and suggested fixes.

Positive Observations

• Correct order lifecycle (orders created in approve())
• Proper use of SwapBelowLimitError and SwapAboveLimitError
• Good chain mapping implementation
• Well-defined cleaners

[paullinator]

Git Workflow Note

This PR contains a merge commit (Merge branch 'master' into add-easybit). For cleaner history, please rebase onto master instead of merging master into your feature branch:

# Instead of:
git merge master  # Creates merge commits

# Use:
git rebase master  # Keeps history linear

Rebasing keeps the commit history linear and makes the PR easier to review. You can do this with:

git checkout add-easybit
git rebase master
git push --force-with-lease

[divyam-eb]

All Comments have been addressed. Please review @paullinator