[occ] Add optimizations for multiversion and mvkv

[udpatil]

Describe your changes and provide context

Add optimizations to reduce mutex lock contention and refactor with sync Maps. This also removes telemetry that was added liberally, and we can later add in telemetry more mindfully and feature flagged.

Testing performed to validate your change

loadtest chain testing

[codecov]

Codecov Report

Merging #361 (226a3d4) into occ-main (6260732) will decrease coverage by 0.10%.
The diff coverage is 86.66%.

Additional details and impacted files

@@             Coverage Diff              @@
##           occ-main     #361      +/-   ##
============================================
- Coverage     56.18%   56.09%   -0.10%     
============================================
  Files           627      627              
  Lines         52926    52865      -61     
============================================
- Hits          29738    29655      -83     
- Misses        21082    21102      +20     
- Partials       2106     2108       +2     

Files	Coverage Δ
baseapp/baseapp.go	72.05% <100.00%> (ø)
store/cache/cache.go	78.57% <100.00%> (ø)
store/multiversion/mvkv.go	97.24% <100.00%> (+0.09%)	⬆️
tasks/scheduler.go	85.56% <100.00%> (+0.10%)	⬆️
store/types/cache.go	48.68% <66.66%> (-14.48%)	⬇️
store/cachekv/store.go	74.60% <95.12%> (+1.45%)	⬆️
store/multiversion/store.go	90.81% <78.57%> (-4.39%)	⬇️

... and 2 files with indirect coverage changes