feat: add ecocredit basket migration

[ryanchristo]

Description

This pull request adds a state migration to the v5.1 upgrade that fixes the NCT basket on regen-1.

Manual Testing: https://hackmd.io/kOchjSOxRJO8cj_uV9swhg

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Author Checklist

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please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

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your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov]

Codecov Report

Merging #1842 (2e9e257) into main (2caf7db) will decrease coverage by 0.02%.
The diff coverage is 60.86%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1842      +/-   ##
==========================================
- Coverage   73.26%   73.24%   -0.02%     
==========================================
  Files         230      230              
  Lines       13692    13706      +14     
==========================================
+ Hits        10031    10039       +8     
- Misses       2930     2934       +4     
- Partials      731      733       +2     

Impacted Files	Coverage Δ
x/ecocredit/server/migrations.go	26.31% <0.00%> (ø)
x/ecocredit/migrations/v4/state.go	90.08% <66.66%> (-4.31%)	⬇️

[ryanchristo]

pending #1812