refactor: implement xline conflict pools

[bsbds]

Please briefly answer these questions:

• what problem are you trying to solve? (or if there's no problem, what's the motivation for this change?)

• what changes does this pull request make?

  This PR implements the conflict pool data structures in xline.

• are there any non-obvious implications of these changes? (does it break compatibility with previous versions, etc)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.46099% with 82 lines in your changes are missing coverage. Please review.

Project coverage is 75.57%. Comparing base (e35b35a) to head (0ab29e9). Report is 35 commits behind head on master.

Files	Patch %	Lines
crates/curp/src/server/conflict/test_pools.rs	0.00%	53 Missing :warning:
crates/xline/src/conflict/uncommitted_pool.rs	92.25%	5 Missing and 7 partials :warning:
crates/xline/src/conflict/spec_pool.rs	91.20%	3 Missing and 5 partials :warning:
crates/xline/src/conflict/tests.rs	97.35%	0 Missing and 6 partials :warning:
crates/xline/src/conflict/mod.rs	90.90%	1 Missing and 1 partial :warning:
crates/xlineapi/src/command.rs	0.00%	0 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #769      +/-   ##
==========================================
+ Coverage   75.55%   75.57%   +0.02%     
==========================================
  Files         180      187       +7     
  Lines       26938    27563     +625     
  Branches    26938    27563     +625     
==========================================
+ Hits        20353    20831     +478     
- Misses       5366     5450      +84     
- Partials     1219     1282      +63     

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[mergify[bot]]

@bsbds Convert your pr to draft since CI failed

[mergify[bot]]

@bsbds Convert your pr to draft since CI failed

[mergify[bot]]

@bsbds Convert your pr to draft since CI failed

[mergify[bot]]

@bsbds Convert your pr to draft since CI failed

[Phoenix500526]

@Mergifyio rebase

[mergify[bot]]

rebase

✅ Branch has been successfully rebased

[mergify[bot]]

@bsbds Convert your pr to draft since CI failed