chore: fix app import names

[aljo242]

Closes #867

What does this PR does?

• Fix import names for our custom modules
• minor formats

[codecov[bot]]

Codecov Report

Merging #889 (c2d941a) into develop (76af023) will decrease coverage by 0.00%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #889      +/-   ##
===========================================
- Coverage    10.40%   10.39%   -0.01%     
===========================================
  Files          332      332              
  Lines        77302    77301       -1     
===========================================
- Hits          8042     8036       -6     
- Misses       69071    69074       +3     
- Partials       189      191       +2     

Impacted Files	Coverage Δ
x/campaign/keeper/campaign_auction_event_hooks.go	58.18% <ø> (-0.75%)	:arrow_down:
x/campaign/simulation/store.go	81.08% <0.00%> (-3.38%)	:arrow_down: