feat: add iavlx

[aaronc]

Description

Closes: #XXXX

[codecov]

Codecov Report

❌ Patch coverage is 55.06329% with 1207 lines in your changes missing coverage. Please review.
✅ Project coverage is 67.76%. Comparing base (46c4d6e) to head (7bd8e21).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
iavl/commit_multi_tree.go	0.00%	236 Missing ⚠️
iavl/compactor.go	0.00%	214 Missing ⚠️
iavl/cleanup.go	41.25%	141 Missing ⚠️
iavl/changeset.go	77.04%	59 Missing ⚠️
iavl/multi_tree.go	0.00%	59 Missing ⚠️
iavl/tree_store.go	67.40%	59 Missing ⚠️
iavl/commit_tree.go	73.20%	56 Missing ⚠️
iavl/dot_graph.go	0.00%	55 Missing ⚠️
iavl/node_update.go	81.22%	40 Missing ⚠️
iavl/changeset_files.go	64.89%	33 Missing ⚠️
... and 21 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #25472      +/-   ##
==========================================
- Coverage   70.32%   67.76%   -2.56%     
==========================================
  Files         822      887      +65     
  Lines       53627    58400    +4773     
==========================================
+ Hits        37712    39574    +1862     
- Misses      15915    18826    +2911     

Files with missing lines	Coverage Δ
server/start.go	19.05% <ø> (ø)
iavl/version_info.go	66.66% <66.66%> (ø)
iavl/writer.go	95.65% <95.65%> (ø)
iavl/node_pointer.go	81.81% <81.81%> (ø)
iavl/branch_layout.go	40.00% <40.00%> (ø)
iavl/leaf_layout.go	40.00% <40.00%> (ø)
iavl/update.go	72.72% <72.72%> (ø)
iavl/kvlog.go	80.95% <80.95%> (ø)
iavl/leaf_persisted.go	75.60% <75.60%> (ø)
iavl/mem_node.go	81.48% <81.48%> (ø)
... and 22 more

... and 38 files with indirect coverage changes

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[aljo242]

needs a make lint-fix and also maybe we want to just call the package iavl instead of iavlx?

[github-advanced-security]

CodeQL found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.