[Katana] Allow choosing the class in the genesis file without affecting the actual class hash

[Yogalholic]

Description

Add a name field in GenesisClassJson that allows class identification by a unique name rather than by hash in Katana

Related issue

Fixes #<#1502>

Tests

• Yes
• No, because they aren't needed
• No, because I need help

Added to documentation?

• README.md
• Dojo Book
• No documentation needed

Checklist

• [X ] I've formatted my code (scripts/prettier.sh, scripts/rust_fmt.sh, scripts/cairo_fmt.sh)
• [X ] I've linted my code (scripts/clippy.sh, scripts/docs.sh)
• [X ] I've commented my code
• [X ] I've requested a review after addressing the comments

[kariy]

hey sorry for not being too active on this PR!

thanks for the work! its looking good so far, just have some few feedbacks. but overall its looking great!

[kariy]

i've also took the liberty to add some changes in 8403a27 . basically adding a custom deserializer for the NameOrHash enum.

because both are parsed as string in the JSON format, we need to do distinguish between when user set an actual class hash (with 0x prefix) or a name.

[codecov]

Codecov Report

Attention: Patch coverage is 76.19048% with 45 lines in your changes are missing coverage. Please review.

Project coverage is 69.70%. Comparing base (bec687b) to head (cc51ab3).

Files	Patch %	Lines
crates/katana/primitives/src/genesis/json.rs	76.19%	45 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1975      +/-   ##
==========================================
- Coverage   69.73%   69.70%   -0.04%     
==========================================
  Files         314      314              
  Lines       35654    35766     +112     
==========================================
+ Hits        24864    24931      +67     
- Misses      10790    10835      +45     

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[kariy]

nice it looks good! i've helped added some stuff and just some styling

thanks!!