IBC Packet Forward Middleware

[batconjurer]

Describe your changes

Integrate with the Packet Forward Middleware code. Requires an ibc-rs fork, in order to support asynchronous IBC packet acknowledgements.

NOTE: The code in the links above should also be reviewed.

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

Attention: Patch coverage is 58.29493% with 181 lines in your changes missing coverage. Please review.

Project coverage is 74.42%. Comparing base (2ae305c) to head (878ca57).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/ibc/src/context/pfm_mod.rs	56.25%	175 Missing ⚠️
crates/ibc/src/context/nft_transfer_mod.rs	33.33%	2 Missing ⚠️
crates/ibc/src/context/transfer_mod.rs	33.33%	2 Missing ⚠️
crates/ibc/src/context/token_transfer.rs	0.00%	1 Missing ⚠️
crates/ibc/src/lib.rs	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4082      +/-   ##
==========================================
- Coverage   74.46%   74.42%   -0.05%     
==========================================
  Files         342      343       +1     
  Lines      107773   108185     +412     
==========================================
+ Hits        80257    80512     +255     
- Misses      27516    27673     +157     

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[sug0]

(before rebase/history cleanup: dc3950c)

[yito88]

Looks good! Left trivial comments.

[sug0]

(rebased on latest main)