DataTree and utility classes

[kunitoki]

Add DataTree System with Query, Schema, and Cached Values

This PR introduces a new powerful hierarchical data model system to YUP, centered around the DataTree class. This system provides a robust foundation for storing and manipulating structured data with transactions, validation, and efficient querying.

Core Components

DataTree: A transactional hierarchical data structure that replaces traditional ValueTree with enhanced performance, safety, and usability
DataTreeQuery: A sophisticated query engine with both fluent API and XPath-like syntax for extracting data
DataTreeSchema: JSON Schema-based validation for DataTree structures
CachedValue/AtomicCachedValue: Reactive property wrappers that update automatically when data changes
DataTreeObjectList: Collection management for binding C++ objects to DataTree nodes

Key Features

Transactional Operations: All changes are performed through transactions for atomicity
Schema Validation: Define constraints, defaults, and validation rules using JSON Schema
Reactive Properties: Cached values automatically update when the underlying data changes
Thread Safety: Atomic cached values for concurrent access
Efficient Querying: Powerful query system for navigating, filtering, and transforming data
Object Binding: Synchronize C++ objects with the data model

Documentation

Added a comprehensive tutorial for the DataTree system that explains:

• Basic usage and concepts
• Query syntax and patterns
• Schema validation
• Cached values for reactive programming
• Object list management

Other Changes

• Added getProperty(propertyName, defaultValue) to DynamicObject
• Enhanced HashMap with Identifier key support and convenience methods

This new data model provides a foundation for building more complex state management, configurations, and object hierarchies in YUP applications.

[codecov]

Codecov Report

❌ Patch coverage is 86.05948% with 300 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.33%. Comparing base (45fd338) to head (eb44f90).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
modules/yup_data_model/tree/yup_DataTree.cpp	80.21%	150 Missing ⚠️
modules/yup_data_model/tree/yup_DataTreeQuery.cpp	90.20%	73 Missing ⚠️
modules/yup_data_model/tree/yup_DataTreeSchema.cpp	89.89%	30 Missing ⚠️
...odules/yup_data_model/tree/yup_AtomicCachedValue.h	78.57%	15 Missing ⚠️
...dules/yup_data_model/tree/yup_DataTreeObjectList.h	81.69%	13 Missing ⚠️
modules/yup_data_model/tree/yup_DataTree.h	85.71%	8 Missing ⚠️
modules/yup_data_model/tree/yup_CachedValue.h	92.55%	7 Missing ⚠️
modules/yup_data_model/tree/yup_DataTreeQuery.h	92.10%	3 Missing ⚠️
modules/yup_data_model/tree/yup_DataTreeSchema.h	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #74      +/-   ##
==========================================
+ Coverage   57.74%   59.33%   +1.58%     
==========================================
  Files         475      484       +9     
  Lines       44155    46331    +2176     
==========================================
+ Hits        25499    27490    +1991     
- Misses      18656    18841     +185     

Files with missing lines	Coverage Δ
modules/yup_core/containers/yup_DynamicObject.cpp	100.00% <100.00%> (ø)
modules/yup_core/containers/yup_DynamicObject.h	66.66% <ø> (ø)
modules/yup_core/containers/yup_HashMap.h	98.22% <100.00%> (+0.32%)	⬆️
modules/yup_data_model/tree/yup_DataTreeSchema.h	90.90% <90.90%> (ø)
modules/yup_data_model/tree/yup_DataTreeQuery.h	92.10% <92.10%> (ø)
modules/yup_data_model/tree/yup_CachedValue.h	92.55% <92.55%> (ø)
modules/yup_data_model/tree/yup_DataTree.h	85.71% <85.71%> (ø)
...dules/yup_data_model/tree/yup_DataTreeObjectList.h	81.69% <81.69%> (ø)
...odules/yup_data_model/tree/yup_AtomicCachedValue.h	78.57% <78.57%> (ø)
modules/yup_data_model/tree/yup_DataTreeSchema.cpp	89.89% <89.89%> (ø)
... and 2 more

... and 10 files with indirect coverage changes

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