feat(x/ecocredit): add minimal basket proto

[aaronc]

Description

Minimal basket proto to align with super quick Regen Ledger 2.1 release. To be backported against v2.0.x.

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[codecov]

Codecov Report

Merging #731 (c339274) into master (63eb64d) will increase coverage by 0.41%.
The diff coverage is 70.22%.

❗ Current head c339274 differs from pull request most recent head 8b9f2c1. Consider uploading reports for the commit 8b9f2c1 to get more accurate results

@@            Coverage Diff             @@
##           master     #731      +/-   ##
==========================================
+ Coverage   74.74%   75.15%   +0.41%     
==========================================
  Files         118      107      -11     
  Lines       19542    14263    -5279     
==========================================
- Hits        14606    10719    -3887     
+ Misses       3963     2905    -1058     
+ Partials      973      639     -334     

Flag	Coverage Δ
experimental-codecov	75.29% <70.32%> (+0.45%)	⬆️
stable-codecov	66.78% <70.22%> (-0.91%)	⬇️

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[technicallyty]

lgtm, just comment nits

[clevinson]

Looking good!

Few small suggestions/questions that I think we should address before merging. Nothing major.

[clevinson]

Speaking with @glandua, we should also have the option of the recency filter being a fixed date. This is what we will use for the initial basket RND is creating (2012 min vintage start date)

[aaronc]

I talked with @glandua and we decided to just support fixed start date for now to support to minimal known requirements. Let's add an issue to add support for rolling date windows in the next release.

[aaronc]

Pushed several updates. Please re-review @clevinson @technicallyty

[robert-zaremba]

not blocking, left few suggestions. I wonder if we should use basket.id instead of denom in all the mappings.

[ryanchristo]

Looks good to me. A couple comments but nothing blocking.

[aaronc]

auto-merging to unblock the next pieces