perf: Streamline leverage CLI tests

[toteki]

Description

While this doesn't eliminate the need to run a network entirely, it does reduce the average duration of leverage CLI tests from about 320s to 35s locally.

Two main reasons the speed has increased:

• Liquidation transaction working without a governance proposal to adjust collateral weight (saves ~100sec)
• Test transactions and queries with prerequisites (e.g. can only borrow after lending + setting collateral) grouped into a single scenario, to eliminate setup/cleanup transactions which each cost 1 block time. (saves ~200sec)

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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 appropriate labels to the PR
• 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
• 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
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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-commenter]

Codecov Report

Merging #987 (0a3c3e1) into main (d30b0f8) will decrease coverage by 6.99%.
The diff coverage is 95.39%.

@@            Coverage Diff             @@
##             main     #987      +/-   ##
==========================================
- Coverage   50.95%   43.96%   -7.00%     
==========================================
  Files          64       64              
  Lines        9490     8332    -1158     
==========================================
- Hits         4836     3663    -1173     
- Misses       4401     4414      +13     
- Partials      253      255       +2     

Impacted Files	Coverage Δ
x/leverage/client/cli/tx.go	0.00% <0.00%> (ø)
x/leverage/client/tests/suite.go	69.41% <58.33%> (-30.59%)	⬇️
x/leverage/client/tests/tests.go	100.00% <100.00%> (ø)

[RafilxTenfen]

The only thing is that codecov is still counting the files x/leverage/client/tests/suite.go and x/leverage/client/tests/tests.go

I tried to change the name from .codecov.yml to codecov.yml in #989 but it didn't work :/

[toteki]

I also tried renaming the two files to end with _test.go but the suite consistently errors in that case

    suite_test.go:36: 
        	Error Trace:	suite_test.go:36
        	            				suite.go:118
        	            				cli_test.go:45
        	Error:      	Received unexpected error:
        	            	timeout exceeded waiting for block
        	Test:       	TestIntegrationTestSuite

So for now, just leaving the coverage situation as it was.