refactor: Update historic medians query

[rbajollari]

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[robert-zaremba]

Where and why there was a decision to expose the aggregate methods outside? These can be expensive and should not be exposed by default.

[codecov-commenter]

Codecov Report

Merging #1651 (3e198b4) into main (2782a97) will increase coverage by 0.04%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##             main    #1651      +/-   ##
==========================================
+ Coverage   55.29%   55.34%   +0.04%     
==========================================
  Files          73       73              
  Lines        7503     7511       +8     
==========================================
+ Hits         4149     4157       +8     
+ Misses       3034     3033       -1     
- Partials      320      321       +1     

Impacted Files	Coverage Δ
x/oracle/keeper/grpc_query.go	92.38% <80.00%> (-1.27%)	⬇️
x/oracle/keeper/params.go	80.39% <0.00%> (+5.88%)	⬆️

[adamewozniak]

this lgtm! we should rename the title of this PR though

[gsk967]

Can you add min or max limit for numStamps params , and can do make proto-all

[gsk967]

LGTM

[adamewozniak]

@robert-zaremba please re-review

[robert-zaremba]

• regenerate proto based on updated types
• in ValidateBasic check that numStamps > 0 and add a test

[robert-zaremba]

Clicked too quickly, see my previous review.

[adamewozniak]

cc @rbajollari

[adamewozniak]

@robert-zaremba is there any reason to block this? let's get this merged in

[robert-zaremba]

@adamewozniak yes, see my review. Especially the first one. Few important things were missing. going to do second review now.

[robert-zaremba]

utACK