state machine updates for tx replay

[hstove]

• Closes Tx Replay: Signer detects forks and updates state machine with replay transactions #5968

This PR implements:

• Detecting forks in the signer state machine
• Updating the tenure fork info API to include dropped blocks, which can be used to construct the tx replay set
• Include a Vec<StacksTransaction> in state machine updates
  • For now, this vec is cleared as soon as a new Stacks block comes in (regardless of that block's contents). This allows us to monitor state machine updates

This builds on top of #6048 (which we should merge first)

[hstove]

Current state of this PR:

• tx_replay_set, an Option<Vec<StacksTransaction>>, is added the SignerStateMachine
• signer_state detects a bitcoin fork in bitcoin_block_arrival and fetches dropped blocks
• The "fork info" API is updated to included dropped Nakamoto blocks
• The signer updates their local signer state machine with the dropped tx's from this API
• A new integration test triggers a Bitcoin fork and asserts that the state machine has the right tx replay set

[kantai]

This LGTM, just a few comments

[hstove]

All comments addressed, plz re-review!

[obycode]

LGTM!

[hstove]

Fixed a conflict, re-requesting reviews 🙏

[codecov]

Codecov Report

Attention: Patch coverage is 46.37437% with 318 lines in your changes missing coverage. Please review.

Project coverage is 83.33%. Comparing base (0ca28a0) to head (745ce55).
Report is 28 commits behind head on develop.

Files with missing lines	Patch %	Lines
testnet/stacks-node/src/tests/signer/v0.rs	0.00%	276 Missing ⚠️
stacks-signer/src/client/stacks_client.rs	0.00%	21 Missing ⚠️
stacks-signer/src/v0/signer_state.rs	93.54%	6 Missing ⚠️
stacks-signer/src/signerdb.rs	90.56%	5 Missing ⚠️
stackslib/src/net/api/mod.rs	86.20%	4 Missing ⚠️
stackslib/src/chainstate/stacks/transaction.rs	0.00%	3 Missing ⚠️
...tackslib/src/chainstate/nakamoto/staging_blocks.rs	92.30%	2 Missing ⚠️
stackslib/src/net/api/get_tenures_fork_info.rs	95.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6020      +/-   ##
===========================================
+ Coverage    73.43%   83.33%   +9.89%     
===========================================
  Files          538      538              
  Lines       388534   389065     +531     
  Branches       323      323              
===========================================
+ Hits        285306   324210   +38904     
+ Misses      103220    64847   -38373     
  Partials         8        8              

Files with missing lines	Coverage Δ
libsigner/src/events.rs	89.21% <100.00%> (+3.19%)	⬆️
stacks-signer/src/tests/chainstate.rs	100.00% <100.00%> (+16.00%)	⬆️
stacks-signer/src/v0/signer.rs	85.09% <100.00%> (+1.10%)	⬆️
stackslib/src/chainstate/stacks/mod.rs	78.96% <ø> (+0.23%)	⬆️
testnet/stacks-node/src/tests/signer/mod.rs	87.09% <100.00%> (-4.23%)	⬇️
stackslib/src/net/api/get_tenures_fork_info.rs	74.75% <95.00%> (+0.90%)	⬆️
...tackslib/src/chainstate/nakamoto/staging_blocks.rs	90.74% <92.30%> (+0.08%)	⬆️
stackslib/src/chainstate/stacks/transaction.rs	97.21% <0.00%> (+19.69%)	⬆️
stackslib/src/net/api/mod.rs	89.69% <86.20%> (-0.75%)	⬇️
stacks-signer/src/signerdb.rs	94.07% <90.56%> (+10.84%)	⬆️
... and 3 more

... and 261 files with indirect coverage changes

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