feat: signPSBT

[rolznz]

• use new bitcoin object and remove added lib functions. Use new liquid secp provider for signing
• remove experimental webpack flag
• review addition of new libraries
• review inconsistency with liquid - here signPsbt actually uses hex, liquid uses base64. Hex seems more accepted for bitcoin tools and APIs.

Describe the changes you have made in this PR

Ability to sign partially signed bitcoin transactions

Test it at: https://getalby.github.io/bitcoin-wallet/

Type of change

(Remove other not matching type)

• feat: New feature (non-breaking change which adds functionality)

Screenshots of the changes [optional]

Add screenshots to make your changes easier to understand. You can also add a video here.

How has this been tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

Checklist

• Self-review of changed code
• Manual testing
• Added automated tests where applicable
• Update Docs & Guides
• For UI-related changes
• Darkmode
• Responsive layout

[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Packages	Version	New capabilities	Transitives	Size	Publisher
@bitcoinerlab/secp256k1	1.0.5	None	+0	10.4 MB	jl.landabaso

🚮 Removed packages: @scure/btc-signer@0.5.1

[reneaaron]

Nice work! 🚀

[reneaaron]

tACK