Feat/signer two phase commit

[jferrant]

Closes #6099

[codecov]

Codecov Report

Attention: Patch coverage is 79.13279% with 77 lines in your changes missing coverage. Please review.

Project coverage is 82.42%. Comparing base (1e60445) to head (3ae5af9).
Report is 7 commits behind head on develop.

Files with missing lines	Patch %	Lines
testnet/stacks-node/src/tests/signer/v0.rs	47.19%	47 Missing ⚠️
stacks-signer/src/v0/signer.rs	86.40%	17 Missing ⚠️
libsigner/src/v0/messages.rs	83.54%	13 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6082      +/-   ##
===========================================
+ Coverage    77.31%   82.42%   +5.11%     
===========================================
  Files          541      541              
  Lines       344258   344557     +299     
  Branches       323      323              
===========================================
+ Hits        266166   284007   +17841     
+ Misses       78084    60542   -17542     
  Partials         8        8              

Files with missing lines	Coverage Δ
stacks-signer/src/monitoring/mod.rs	91.66% <100.00%> (+0.26%)	⬆️
stacks-signer/src/monitoring/prometheus.rs	100.00% <ø> (ø)
stacks-signer/src/signerdb.rs	92.99% <100.00%> (+6.18%)	⬆️
stacks-signer/src/v0/tests.rs	89.00% <100.00%> (+1.94%)	⬆️
...tacks-node/src/nakamoto_node/stackerdb_listener.rs	84.25% <100.00%> (+0.04%)	⬆️
libsigner/src/v0/messages.rs	86.23% <83.54%> (+4.49%)	⬆️
stacks-signer/src/v0/signer.rs	83.98% <86.40%> (+2.05%)	⬆️
testnet/stacks-node/src/tests/signer/v0.rs	46.47% <47.19%> (+1.21%)	⬆️

... and 224 files with indirect coverage changes

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