Multi payload packet

[AdityaSripal]

Description

closes: cosmos/ibc#1233

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work.
• Include changelog entry when appropriate (e.g. chores should be omitted from changelog).
• Wrote unit and integration tests if relevant.
• Updated documentation (docs/) if anything is changed.
• Added godoc comments if relevant.
• Self-reviewed Files changed in the GitHub PR explorer.
• Provide a conventional commit message to follow the repository standards.

[codecov]

Codecov Report

Attention: Patch coverage is 94.11765% with 2 lines in your changes missing coverage. Please review.

Project coverage is 57.62%. Comparing base (941b95c) to head (c3f52f3).

Files with missing lines	Patch %	Lines
modules/core/04-channel/v2/keeper/msg_server.go	77.77%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8545      +/-   ##
==========================================
+ Coverage   57.57%   57.62%   +0.05%     
==========================================
  Files         317      317              
  Lines       22673    22678       +5     
==========================================
+ Hits        13053    13069      +16     
+ Misses       9012     9004       -8     
+ Partials      608      605       -3     

Flag	Coverage Δ
08-wasm	66.13% <ø> (ø)
e2e	1.13% <ø> (ø)
ibc-go	63.04% <94.11%> (+0.06%)	⬆️

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