[draft] Implement Osmosis shielded swaps

[sug0]

Describe your changes

Based on #4134

• Implement SDK/CLI code to perform shielded swaps.
• Integrate with the overflow receive middleware, to support directly shielding the minimum output amount of a trade on Osmosis, and sending the diff to a transient account.

Diff: https://github.com/anoma/namada/compare/bat+tiago/feat/ibc-pfm-with-invalid-addrs..tiago/osmosis-swap-cli-over-v44

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 22.00000% with 585 lines in your changes missing coverage. Please review.

Project coverage is 74.10%. Comparing base (2ae305c) to head (037d931).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/sdk/src/args.rs	0.00%	173 Missing ⚠️
crates/ibc/src/context/middlewares/pfm_mod.rs	16.90%	172 Missing ⚠️
crates/sdk/src/rpc.rs	0.00%	90 Missing ⚠️
...rates/ibc/src/context/middlewares/shielded_recv.rs	23.14%	83 Missing ⚠️
crates/ibc/src/msg.rs	21.56%	40 Missing ⚠️
crates/ibc/src/context/token_transfer.rs	63.63%	8 Missing ⚠️
crates/core/src/address.rs	40.00%	6 Missing ⚠️
crates/core/src/token.rs	0.00%	6 Missing ⚠️
crates/ibc/src/context/nft_transfer_mod.rs	33.33%	2 Missing ⚠️
crates/ibc/src/context/transfer_mod.rs	33.33%	2 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4133      +/-   ##
==========================================
- Coverage   74.46%   74.10%   -0.37%     
==========================================
  Files         342      345       +3     
  Lines      107773   108493     +720     
==========================================
+ Hits        80257    80394     +137     
- Misses      27516    28099     +583     

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[sug0]

TODO add new e2e tests to CI

[sug0]

TODO: add a changelog.

this check is passing in CI, but only because we are checking the entries from the base PRs