add taproot wallet descriptors with AddressType enum

[stark-3k]

This PR:

• adds the ability for the wallet to generate P2TR key-path spending addresses using the taproot descriptors
• introduces AddressType enum to specify the type of address generation for various usecases
• defaults to P2WPKH for v1 protocol and uses P2TR for v2 protocol
• fixes a coin selection bug where target value was incorrectly calculated after group UTXO selection

[codecov]

Codecov Report

❌ Patch coverage is 86.58009% with 31 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.58%. Comparing base (776b75d) to head (51cb6af).
⚠️ Report is 68 commits behind head on master.

Files with missing lines	Patch %	Lines
src/wallet/api.rs	92.02%	13 Missing ⚠️
src/maker/rpc/server.rs	0.00%	5 Missing ⚠️
src/maker/server2.rs	55.55%	4 Missing ⚠️
src/wallet/error.rs	0.00%	3 Missing ⚠️
src/wallet/funding.rs	25.00%	3 Missing ⚠️
src/wallet/fidelity.rs	75.00%	2 Missing ⚠️
src/wallet/ffi.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #674      +/-   ##
==========================================
+ Coverage   68.87%   77.58%   +8.70%     
==========================================
  Files          35       49      +14     
  Lines        4932    14990   +10058     
==========================================
+ Hits         3397    11630    +8233     
- Misses       1535     3360    +1825     

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[mojoX911]

Mostly looks good. One questions below.

Also does it makes sense to make all transactions taproot by default now that the wallet can handle both?

[mojoX911]

Ack