refactor(oracle): Implement OrderedMap and use it for iterating through maps in x/oracle

[Unique-Divine]

No description provided.

[codecov]

Codecov Report

Merging #1506 (1738b81) into master (4566d9f) will increase coverage by 3.25%.
The diff coverage is 87.26%.

❗ Current head 1738b81 differs from pull request most recent head d86790b. Consider uploading reports for the commit d86790b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1506      +/-   ##
==========================================
+ Coverage   62.00%   65.26%   +3.25%     
==========================================
  Files         159      161       +2     
  Lines       13914    14040     +126     
==========================================
+ Hits         8628     9163     +535     
+ Misses       4642     4230     -412     
- Partials      644      647       +3     

Impacted Files	Coverage Δ
x/common/omap/omap.go	71.01% <71.01%> (ø)
x/common/omap/impl.go	100.00% <100.00%> (ø)
x/common/testutil/cli/network.go	59.78% <100.00%> (ø)
x/inflation/types/params.go	73.91% <100.00%> (ø)
x/oracle/keeper/ballot.go	93.68% <100.00%> (-0.26%)	⬇️
x/oracle/keeper/update_exchange_rates.go	93.50% <100.00%> (-0.47%)	⬇️
x/perp/v2/types/amm.go	87.55% <100.00%> (+20.59%)	⬆️
x/perp/v2/types/market.go	100.00% <100.00%> (+100.00%)	⬆️
x/perp/v2/types/msgs.go	92.10% <100.00%> (+92.10%)	⬆️
x/perp/v2/types/position.go	100.00% <100.00%> (+100.00%)	⬆️
... and 2 more

... and 4 files with indirect coverage changes

[matthiasmatt]

func (om *OrderedMap[K, V]) IndexOf(key K) (out *int) panics when an element is missing. it's probably better to fix it to avoid chain halt risk