feat: new download engine

[ido-pluto]

BREAKING CHANGE: New API, Support for browser download

Description of change

iPull now has its own download engine, that supports:

• Pausing and resuming downloads (even after sudden failure, without any corruption)
• Parallel stream (Download using multiple connections)
• Browser support using the (fetch and xhr API)
• Download statistics (speed, time left, etc.)
• Better CLI Progress bar (Node.js & Bun)
• Smart retry on fail (using async-retry)

The new version has tests, better documentation, simpler API and many more customizations

Pull-Request Checklist

• Code is up-to-date with the main branch
• npm run format to apply prettier formatting
• This pull request links relevant issues as Fixes #0000
• Documentation has been updated to reflect this change
• The new commits follow conventions explained
  in CONTRIBUTING.md

[github-actions]

🎉 This PR is included in version 2.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release
• v2.0.0

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