Remove allowedSignHash from sign PSBT args + some fixes

[victorkirov]

• allowedSignHash was removed as the implementation no longer requires it. It is also optional for Unisat, so there isn't a breaking change for the unisat integration.
• lodash.omit was removed to decrease dependencies and was replaced with a basic, vanilla JS spread operator
• a relative import was fixed
• The Unisat adapter was brought up to date with the event listener function
• The GitHub workflow was changed to run the build-debug script as the build script seems to ignore typing issues (like the missing Unisat method in pervious point)