[ui] Eval expression directly in specific TextFields

[Alxiice]

• Adding ExpressionTextField component that is evaluating and replacing the text field when entered math expressions
  
• Error cases are handled with NaN values and a visual indicator
  
• Possibility to specify if the field is int or float (int will automatically cast to an integer)

For now this is used :

• On slider attributes (Used for IntParam and FloatParam)
• On the HdrImageToolbar component and on the gamma and gain settings

Some additional examples :

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.79%. Comparing base (e704e5b) to head (5bc6fdb).
⚠️ Report is 5 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2836   +/-   ##
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  Coverage    77.79%   77.79%           
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  Files           50       50           
  Lines         6725     6725           
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  Hits          5232     5232           
  Misses        1493     1493           

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[Copilot]

Pull Request Overview

This PR introduces mathematical expression evaluation capabilities to specific text fields in the UI, allowing users to input mathematical expressions that are automatically evaluated and replaced with their computed results.

• Adds a new ExpressionTextField component that evaluates math expressions and handles error cases with visual indicators
• Implements a JavaScript-based math evaluator supporting common mathematical functions and constants
• Replaces standard text fields with expression-enabled fields in slider controls and HDR image toolbar

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
meshroom/ui/qml/Controls/mathEvaluator.js	JavaScript math evaluator library supporting functions, constants, and expression parsing
meshroom/ui/qml/Controls/ExpressionTextField.qml	New TextField component with expression evaluation and error handling capabilities
meshroom/ui/qml/Controls/qmldir	Module registration for the new components
meshroom/ui/qml/GraphEditor/AttributeItemDelegate.qml	Replaces TextField with ExpressionTextField for slider components
meshroom/ui/qml/Viewer/HdrImageToolbar.qml	Updates gain and gamma controls to use ExpressionTextField
meshroom/core/desc/attribute.py	Adds NaN validation for integer attributes

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