feat: add Ledger HW support

[davidyuk]

requires LedgerHQ/app-aeternity#13 to sign messages properly
ledger app is easy to build and run by guides:

• https://developers.ledger.com/docs/nano-app/build/
• https://developers.ledger.com/docs/nano-app/load/ (only Linux)

Implementing this in SDK should deprecate https://github.com/aeternity/ledger-app-api

[codecov]

Codecov Report

Base: 84.10% // Head: 84.36% // Increases project coverage by +0.26% 🎉

Coverage data is based on head (8baedaa) compared to base (609555a).
Patch coverage: 84.69% of modified lines in pull request are covered.

❗ Current head 8baedaa differs from pull request most recent head 587e058. Consider uploading reports for the commit 587e058 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1685      +/-   ##
===========================================
+ Coverage    84.10%   84.36%   +0.26%     
===========================================
  Files           68       70       +2     
  Lines         2813     2911      +98     
  Branches       488      504      +16     
===========================================
+ Hits          2366     2456      +90     
+ Misses         261      258       -3     
- Partials       186      197      +11     

Impacted Files	Coverage Δ
src/account/Ledger.ts	76.92% <76.92%> (ø)
src/account/LedgerFactory.ts	100.00% <100.00%> (ø)
src/index.ts	100.00% <100.00%> (ø)
src/utils/errors.ts	72.38% <0.00%> (+1.67%)	⬆️
src/channel/handlers.ts	70.62% <0.00%> (+1.87%)	⬆️

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