Functionality to patch models with diff files

[tsmbland]

Description

Please include a summary of the change and which issue is fixed (if any). Please also
include relevant motivation and context. List any dependencies that are required for
this change.

Fixes #655

Type of change

• Bug fix (non-breaking change to fix an issue)
• New feature (non-breaking change to add functionality)
• Refactoring (non-breaking, non-functional change to improve maintainability)
• Optimization (non-breaking change to speed up the code)
• Breaking change (whatever its nature)
• Documentation (improve or add documentation)

Key checklist

• All tests pass: $ cargo test
• The documentation builds and looks OK: $ cargo doc

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

❌ Patch coverage is 53.91850% with 147 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.17%. Comparing base (7dd9790) to head (670c610).
⚠️ Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
src/patch.rs	54.87%	126 Missing and 13 partials ⚠️
src/model/parameters.rs	16.66%	4 Missing and 1 partial ⚠️
src/input.rs	40.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1026      +/-   ##
==========================================
- Coverage   81.68%   80.17%   -1.52%     
==========================================
  Files          53       53              
  Lines        6608     6819     +211     
  Branches     6608     6819     +211     
==========================================
+ Hits         5398     5467      +69     
- Misses        950     1082     +132     
- Partials      260      270      +10     

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