Integrate polyfuzzy for fuzzy message detection

[sug0]

Describe your changes

Partially handles #4479

Particularly, this PR handles the following:

• The layout of MASP shielded data is modified to include the hash of a tx extra data section containing a vector of FMD flag ciphertexts.
• Idem for IBC shielding data (except the FMD flag ciphertexts are included verbatim, as part of ICS-20 memos).
• Inclusion of a new kind of payment address (zfnam1...) that is nearly structurally identical to the other payment address format (znam1...), with the addition of two compressed ristretto255 elliptic curve points, representing a compact FMD public key.
• FMD secret key derivation from MASP input viewing keys, and FMD public key randomization via the diversifiers included in payment addresses.
• Changes to the behavior of the MASP VP, to check for the presence of flag ciphertexts.
• Emitting FMD flag ciphertext events, for consumption by external tooling (e.g. the MASP indexer).

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:

[sug0]

https://github.com/heliaxdev/namada-ci/blob/main/artifacts/app_s2.elf must be updated to fix test-e2e-with-device-automation