Activate global signer state machine

[jacinta-stacks]

Closes https://github.com/stx-labs/core-epics/issues/82

[codecov]

Codecov Report

❌ Patch coverage is 21.63265% with 192 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.08%. Comparing base (3da96c1) to head (1c539fb).

Files with missing lines	Patch %	Lines
stacks-node/src/tests/signer/v0.rs	0.00%	173 Missing ⚠️
libsigner/src/v0/messages.rs	73.68%	15 Missing ⚠️
stacks-signer/src/v0/signer_state.rs	66.66%	3 Missing ⚠️
stacks-node/src/tests/signer/mod.rs	83.33%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6742      +/-   ##
===========================================
- Coverage    78.18%   77.08%   -1.10%     
===========================================
  Files          580      580              
  Lines       361096   361295     +199     
===========================================
- Hits        282312   278522    -3790     
- Misses       78784    82773    +3989     

Files with missing lines	Coverage Δ
stacks-node/src/tests/signer/mod.rs	57.43% <83.33%> (-11.36%)	⬇️
stacks-signer/src/v0/signer_state.rs	70.90% <66.66%> (-8.52%)	⬇️
libsigner/src/v0/messages.rs	83.58% <73.68%> (-1.76%)	⬇️
stacks-node/src/tests/signer/v0.rs	9.43% <0.00%> (-11.91%)	⬇️

... and 100 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3da96c1...1c539fb. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.