feat: add x/auth app wiring integration tests

[likhita-809]

Description

ref: #12302

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• confirmed the correct type prefix in the PR title
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[julienrbrt]

lgtm, just a few nits.

[julienrbrt]

Can you as well add docs, like here https://github.com/cosmos/cosmos-sdk/tree/main/x/authz/spec ?

[blushi]

Can you as well add docs, like here https://github.com/cosmos/cosmos-sdk/tree/main/x/authz/spec ?

We should also probably use a commit hash instead of main in the link to app.yml there.

[julienrbrt]

lgtm!

[codecov]

Codecov Report

Merging #12329 (241ee47) into main (69c9e3e) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #12329      +/-   ##
==========================================
- Coverage   65.88%   65.86%   -0.03%     
==========================================
  Files         676      676              
  Lines       71296    71298       +2     
==========================================
- Hits        46975    46962      -13     
- Misses      21691    21705      +14     
- Partials     2630     2631       +1     

Impacted Files	Coverage Δ
x/auth/client/testutil/suite.go	93.70% <100.00%> (-0.91%)	⬇️
crypto/keys/internal/ecdsa/privkey.go	83.01% <0.00%> (+1.88%)	⬆️