imp(ica/host): implemented 'PacketDataUnmarshaler'

[srdtrk]

Description

closes: #4582

Commit Message / Changelog Entry

imp(ica/host): implemented 'PacketDataUnmarshaler'

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• Targeted PR against correct branch (see CONTRIBUTING.md).
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards and Go style guide.
• Wrote unit and integration tests.
• Updated relevant documentation (docs/) or specification (x/<module>/spec/).
• Added relevant godoc comments.
• Provide a commit message to be used for the changelog entry in the PR description for review.
• Re-reviewed Files changed in the Github PR explorer.
• Review Codecov Report in the comment section below once CI passes.

[codecov-commenter]

Codecov Report

Merging #4587 (c4b0e72) into main (2bb4cfd) will increase coverage by 0.01%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4587      +/-   ##
==========================================
+ Coverage   79.25%   79.26%   +0.01%     
==========================================
  Files         188      188              
  Lines       13064    13071       +7     
==========================================
+ Hits        10354    10361       +7     
  Misses       2276     2276              
  Partials      434      434              

Files Changed	Coverage Δ
...les/apps/27-interchain-accounts/host/ibc_module.go	92.30% <100.00%> (+1.19%)	⬆️

[crodriguezvega]

Looks good to me.