Change types, traits, enums names to CamelCase

[ancazamfir]

Closes: #689

Description

No functional changes, simply renaming some types and enums to follow Rust guidelines.

---

For contributor use:

• Updated the Unreleased section of CHANGELOG.md with the issue.
• If applicable: Unit tests written, added test to CI.
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Updated relevant documentation (docs/) and code comments.
• Re-reviewed Files changed in the Github PR explorer.

[codecov-io]

Codecov Report

Merging #690 (e2e4310) into master (b1b37f5) will increase coverage by 31.3%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #690      +/-   ##
=========================================
+ Coverage    13.6%   45.0%   +31.3%     
=========================================
  Files          69     150      +81     
  Lines        3752    9905    +6153     
  Branches     1374       0    -1374     
=========================================
+ Hits          513    4459    +3946     
- Misses       2618    5446    +2828     
+ Partials      621       0     -621     

Impacted Files	Coverage Δ
modules/src/address.rs	100.0% <ø> (ø)
...application/ics20_fungible_token_transfer/error.rs	0.0% <ø> (ø)
...ion/ics20_fungible_token_transfer/msgs/transfer.rs	0.0% <ø> (ø)
modules/src/events.rs	0.0% <ø> (ø)
modules/src/handler.rs	100.0% <ø> (ø)
modules/src/ics02_client/client_def.rs	48.3% <ø> (ø)
modules/src/ics02_client/client_type.rs	79.1% <ø> (+31.5%)	⬆️
modules/src/ics02_client/context.rs	100.0% <ø> (ø)
modules/src/ics02_client/error.rs	100.0% <ø> (ø)
modules/src/ics02_client/events.rs	15.7% <ø> (+15.7%)	⬆️
... and 255 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ae36bba...e2e4310. Read the comment docs.