feat(x/ecocredit): add BurnRegen method

[aaronc]

Description

This PR adds a BurnRegen method to the ecocredit module which allows a user to burn REGEN from their balance with an optional burn reason which can be used by clients to associate the burn with specific activities.

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[codecov]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (0936200) 73.26% compared to head (f186eea) 73.21%.

❗ Current head f186eea differs from pull request most recent head 5064ed4. Consider uploading reports for the commit 5064ed4 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2107      +/-   ##
==========================================
- Coverage   73.26%   73.21%   -0.06%     
==========================================
  Files         232      234       +2     
  Lines       13748    13801      +53     
==========================================
+ Hits        10073    10104      +31     
- Misses       2941     2958      +17     
- Partials      734      739       +5     

Files	Coverage Δ
x/ecocredit/base/types/v1/msg_burn_regen.go	68.18% <68.18%> (ø)
x/ecocredit/base/keeper/msg_burn_regen.go	51.61% <51.61%> (ø)

[JeancarloBarrios]

It looks good; I was just wondering. Does it make sense that it is its own cosmos SDK x module? that could eventually evolve into a fee management module? However, if so, it makes sense to do it after and migrate it to it then.

[aaronc]

Thanks for the review @JeancarloBarrios. I agree that a standalone module would make more sense. But also, there's a fair amount of overhead in creating a new module, so I think we will get this live on chain sooner by putting it in x/ecocredit. Also, the other burning functionality we've discussed would be native to x/ecocredit so it's not totally out of place.

[aaronc]

It would be great to get one more review here if anyone has time.

[blushi]

LGTM

[aaronc]

This linter was causing CI errors but we never configured it and probably it just got enabled with a default blocking rule in #2148. cc @robert-zaremba