feat: burn op definition and storage for vote-for-agg-key

[hstove]

Based on my notes in this discussion, this PR implements a burn op for vote-for-aggregate-key.

This PR is currently a work in progress. The code exists for parsing and storing this new burn op, but I've yet to actually process the burn op by making a Clarity tx.

This is built on top of #4360, because that PR has the updated function signature for vote-for-aggregate-public-key.

• closes https://github.com/stacks-network/stacks-core/issues/4272

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 92.28371% with 99 lines in your changes are missing coverage. Please review.

Project coverage is 83.28%. Comparing base (067633d) to head (e3a76f7). Report is 34 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #4376      +/-   ##
==========================================
+ Coverage   83.22%   83.28%   +0.05%     
==========================================
  Files         452      453       +1     
  Lines      326058   327328    +1270     
  Branches      323      323              
==========================================
+ Hits       271359   272610    +1251     
- Misses      54691    54710      +19     
  Partials        8        8              

Files	Coverage Δ
stackslib/src/burnchains/bitcoin/bits.rs	94.03% <100.00%> (ø)
stackslib/src/chainstate/burn/db/sortdb.rs	91.94% <100.00%> (+0.09%)	:arrow_up:
...c/chainstate/burn/operations/test/serialization.rs	100.00% <100.00%> (ø)
stackslib/src/chainstate/nakamoto/mod.rs	83.47% <100.00%> (+0.06%)	:arrow_up:
stackslib/src/chainstate/stacks/db/accounts.rs	91.50% <100.00%> (+<0.01%)	:arrow_up:
stackslib/src/chainstate/stacks/db/mod.rs	84.19% <100.00%> (+0.05%)	:arrow_up:
stackslib/src/net/mod.rs	72.91% <ø> (-0.05%)	:arrow_down:
stackslib/src/chainstate/burn/mod.rs	94.19% <0.00%> (-0.25%)	:arrow_down:
stackslib/src/chainstate/burn/db/processing.rs	86.47% <33.33%> (-0.92%)	:arrow_down:
...t/stacks-node/src/burnchains/mocknet_controller.rs	71.24% <0.00%> (-1.89%)	:arrow_down:
... and 7 more

... and 18 files with indirect coverage changes

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[hstove]

Ok, finally figured out why my Nakamoto integration test was failing. Ready for reviews now @obycode @8marz8 @setzeus