Refactor forked provider backend APIs

[kariy]

Description

Related issue

Tests

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

Added to documentation?

• README.md
• Dojo Book
• No documentation needed

Checklist

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

[kariy]

• test(katana): ensure contract non-existent is validated properly on StateProvider::nonce() of forked provider #1947
• Refactor forked provider backend APIs #1944 👈
• refactor(katana): remove ContractInfoProvider  #1943
• main

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[codecov]

Codecov Report

Attention: Patch coverage is 89.51965% with 24 lines in your changes are missing coverage. Please review.

Project coverage is 69.61%. Comparing base (5a7ecd8) to head (9483796).
Report is 1 commits behind head on main.

❗ Current head 9483796 differs from pull request most recent head 8a99d3d. Consider uploading reports for the commit 8a99d3d to get more accurate results

Files	Patch %	Lines
...ana/storage/provider/src/providers/fork/backend.rs	89.23%	24 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1944      +/-   ##
==========================================
+ Coverage   69.38%   69.61%   +0.23%     
==========================================
  Files         314      314              
  Lines       35391    35368      -23     
==========================================
+ Hits        24555    24621      +66     
+ Misses      10836    10747      -89     

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[kariy]

Merge activity

• May 9, 4:27 PM EDT: @kariy started a stack merge that includes this pull request via Graphite.
• May 9, 4:28 PM EDT: Graphite rebased this pull request as part of a merge.
• May 9, 4:29 PM EDT: @kariy merged this pull request with Graphite.