[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

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

Added to documentation?

• README.md
• Dojo Book
• [x ] 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

[codecov]

Codecov Report

Attention: Patch coverage is 66.21622% with 25 lines in your changes are missing coverage. Please review.

Project coverage is 69.72%. Comparing base (de3b2e5) to head (da71a89).

Files	Patch %	Lines
crates/katana/primitives/src/genesis/json.rs	66.21%	25 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1972      +/-   ##
==========================================
- Coverage   69.80%   69.72%   -0.08%     
==========================================
  Files         313      313              
  Lines       35526    35579      +53     
==========================================
+ Hits        24798    24808      +10     
- Misses      10728    10771      +43     

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[Yogalholic]

I have opened the final PR here