IBC Upgrades function interface return client/consensus

[colin-axner]

Description

closes: #7876
closes: #7878

---

Before we can merge this PR, please make sure that all the following items have been
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write a little note why.

• 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.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #7895 (1ef555e) into master (76ffdcc) will increase coverage by 0.00%.
The diff coverage is 75.00%.

@@           Coverage Diff           @@
##           master    #7895   +/-   ##
=======================================
  Coverage   54.18%   54.18%           
=======================================
  Files         612      612           
  Lines       38960    38958    -2     
=======================================
+ Hits        21109    21110    +1     
+ Misses      15692    15690    -2     
+ Partials     2159     2158    -1     

[AdityaSripal]

Looks like a good start, seems like it makes the most sense to get this merged and I can take over integrating consensus states? What are your thoughts @colin-axner ?

[colin-axner]

Looks like a good start, seems like it makes the most sense to get this merged and I can take over integrating consensus states? What are your thoughts @colin-axner ?

Those were my exact thoughts 👍