Refactor some naming in the Transfer app to align with our convention

[Farhad-Shabani]

Closes: #506

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PR author checklist:

• Added changelog entry, using unclog.
• Added tests.
• Linked to GitHub issue.
• Updated code comments and documentation (e.g., docs/).
• 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: 72.69% and project coverage change: +0.03 🎉

Comparison is base (a7f8062) 71.80% compared to head (0237570) 71.83%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #514      +/-   ##
==========================================
+ Coverage   71.80%   71.83%   +0.03%     
==========================================
  Files         126      126              
  Lines       15820    15852      +32     
==========================================
+ Hits        11359    11387      +28     
- Misses       4461     4465       +4     

Impacted Files	Coverage Δ
crates/ibc/src/applications/transfer/context.rs	51.06% <0.00%> (ø)
crates/ibc/src/applications/transfer/relay.rs	0.00% <0.00%> (ø)
.../src/applications/transfer/relay/on_recv_packet.rs	0.00% <0.00%> (ø)
crates/ibc/src/core/ics04_channel/packet.rs	47.30% <40.00%> (ø)
...tes/ibc/src/applications/transfer/msgs/transfer.rs	46.53% <63.63%> (ø)
.../src/core/ics04_channel/handler/acknowledgement.rs	85.51% <70.00%> (+0.27%)	⬆️
.../ibc/src/core/ics04_channel/handler/send_packet.rs	82.17% <71.42%> (+0.54%)	⬆️
...src/core/ics04_channel/handler/timeout_on_close.rs	86.16% <73.07%> (+0.27%)	⬆️
crates/ibc/src/core/context.rs	84.09% <75.00%> (ø)
...ates/ibc/src/core/ics04_channel/handler/timeout.rs	89.30% <82.75%> (+0.03%)	⬆️
... and 8 more

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