feat(ecocredit): add batch denom migration

[aleem1314]

Description

Closes: #1049

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Author Checklist

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• confirmed the correct type prefix in the PR title
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• reviewed state machine logic
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[codecov]

Codecov Report

Merging #1095 (1a6b1db) into master (8190c36) will decrease coverage by 0.25%.
The diff coverage is 81.81%.

❗ Current head 1a6b1db differs from pull request most recent head 5092e6b. Consider uploading reports for the commit 5092e6b to get more accurate results

@@            Coverage Diff             @@
##           master    #1095      +/-   ##
==========================================
- Coverage   68.36%   68.11%   -0.26%     
==========================================
  Files         212      210       -2     
  Lines       21080    20989      -91     
==========================================
- Hits        14411    14296     -115     
- Misses       5348     5367      +19     
- Partials     1321     1326       +5     

Flag	Coverage Δ
experimental-codecov	68.05% <81.81%> (-0.21%)	⬇️
stable-codecov	61.80% <81.81%> (-0.34%)	⬇️

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[ryanchristo]

This looks great. Nice work.

[technicallyty]

pre-approving, just 2 small nits 👍🏻