Remove bp-wallet dependency

[dr-orlovsky]

In style of RGB-WG/rgb-std#323 this PR rethinks what underlying wallet should do for RGB needs; simplifying these requirements as much as possible. This allows to remove bp-wallet dependency and use much simpler persistence and resolver APIs.

[codecov]

Codecov Report

Attention: Patch coverage is 9.24370% with 432 lines in your changes missing coverage. Please review.

Project coverage is 5.7%. Comparing base (b6b927c) to head (f81d0f8).
Report is 33 commits behind head on master.

Files with missing lines	Patch %	Lines
src/owner.rs	18.5%	189 Missing ⚠️
src/resolvers/mod.rs	0.0%	69 Missing ⚠️
src/resolvers/electrum.rs	0.0%	61 Missing ⚠️
src/resolvers/esplora.rs	0.0%	57 Missing ⚠️
src/runtime.rs	0.0%	24 Missing ⚠️
cli/src/args.rs	0.0%	14 Missing ⚠️
cli/src/opts.rs	0.0%	8 Missing ⚠️
cli/src/exec.rs	0.0%	6 Missing ⚠️
src/descriptor.rs	20.0%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #308     +/-   ##
=======================================
+ Coverage     3.8%   5.7%   +1.9%     
=======================================
  Files          10     13      +3     
  Lines        1063   1409    +346     
=======================================
+ Hits           40     80     +40     
- Misses       1023   1329    +306     

Flag	Coverage Δ
rust	5.7% <9.2%> (+1.9%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.