New client utils

[brentstone]

Describe your changes

• Derive IBC token address from transfer/channel-X/<denom> string - closes Command to get native address from an IBC token path #3951
• Derive implicit address from raw public key (tpknam)

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

All modified and coverable lines are covered by tests ✅

Project coverage is 73.99%. Comparing base (2107072) to head (2806389).
Report is 42 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3968      +/-   ##
==========================================
- Coverage   74.00%   73.99%   -0.01%     
==========================================
  Files         341      341              
  Lines      106615   106615              
==========================================
- Hits        78901    78895       -6     
- Misses      27714    27720       +6     

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