feat(math): adding Dec.SdkIntTrim

[robert-zaremba]

Description

Closes: #987

Benchmarks:

goos: linux
goarch: amd64
BenchmarkSdkIntTrim/exp-16               1000000              1245 ns/op
BenchmarkSdkIntTrim/quo-integer-16        408232              2490 ns/op
BenchmarkSdkIntTrim/string-16             598272              2685 ns/op

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[codecov]

Codecov Report

Merging #988 (077274e) into master (21d4003) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #988      +/-   ##
==========================================
- Coverage   72.35%   72.34%   -0.02%     
==========================================
  Files         212      212              
  Lines       23508    23521      +13     
==========================================
+ Hits        17009    17016       +7     
- Misses       5137     5144       +7     
+ Partials     1362     1361       -1     

Flag	Coverage Δ
experimental-codecov	72.14% <100.00%> (-0.09%)	⬇️
stable-codecov	67.16% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

[ryanchristo]

This looks good to me.

You previously mentioned this was something you would like to see up-streamed to the sdk and said you would prefer @AmauryM and @anilcse to review. Might be good to get a review from @aaronc as well.

[technicallyty]

LGTM. Not sure what will get merged first, so might be nice to create an issue to update buy_direct with this utility function

[robert-zaremba]

You previously mentioned this was something you would like to see up-streamed to the sdk

The whole library. In SDK we don't use apd.

[aaronc]

We should be thinking about upstreaming this math package to the SDK (as a math go module) in the near future. It has long been known that the current SDK Dec is not ideal (cosmos/cosmos-sdk#7773). Either apd or https://github.com/EricLagergren/decimal should be the basis of what we use in the SDK in the future. If anyone is able to compare those two libraries btw that we be great so we can make an informed decision and best support things upstream. See also cockroachdb/apd#100