scale encoding for transfer

[dzmitry-lahoda]

Closes: #SELF

Description

---

PR author checklist:

• Added changelog entry, using unclog.
• Added tests. (no tests for serde)
• Linked to GitHub issue (PR is issue).
• Updated code comments and documentation (e.g., docs/). (no thing to doc)
• Tagged one reviewer who will be the one responsible for shepherding this PR.

Reviewer checklist:

• Reviewed Files changed in the GitHub PR explorer.
• Manually tested (in case integration/unit/mock tests are absent).

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.05 ⚠️

Comparison is base (1c5b50b) 72.33% compared to head (ee4371a) 72.28%.

❗ Current head ee4371a differs from pull request most recent head 167c27a. Consider uploading reports for the commit 167c27a to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #745      +/-   ##
==========================================
- Coverage   72.33%   72.28%   -0.05%     
==========================================
  Files         116      116              
  Lines       15529    15539      +10     
==========================================
  Hits        11233    11233              
- Misses       4296     4306      +10     

Impacted Files	Coverage Δ
crates/ibc/src/applications/transfer/amount.rs	33.33% <0.00%> (-11.12%)	⬇️
crates/ibc/src/applications/transfer/coin.rs	82.19% <0.00%> (-1.15%)	⬇️
...tes/ibc/src/applications/transfer/msgs/transfer.rs	49.51% <0.00%> (-0.99%)	⬇️
crates/ibc/src/applications/transfer/packet.rs	50.00% <0.00%> (-2.39%)	⬇️

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[Farhad-Shabani]

Ty 🙏