test(x/ecocredit): migrate create batch tests

[ryanchristo]

Description

Ref: #893

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Author Checklist

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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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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 #1241 (eba05ee) into master (510b640) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1241      +/-   ##
==========================================
+ Coverage   80.01%   80.02%   +0.01%     
==========================================
  Files         232      232              
  Lines       21527    21533       +6     
==========================================
+ Hits        17225    17232       +7     
  Misses       2988     2988              
+ Partials     1314     1313       -1     

Flag	Coverage Δ
experimental-codecov	80.06% <100.00%> (+0.01%)	⬆️
stable-codecov	75.12% <100.00%> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
x/ecocredit/server/core/msg_create_project.go	72.88% <ø> (ø)
x/ecocredit/server/core/msg_mint_batch_credits.go	61.85% <ø> (ø)
x/ecocredit/server/core/msg_create_batch.go	70.66% <100.00%> (ø)

[technicallyty]

lgtm 👍🏻

[aleem1314]

lgtm