docs(qt.py): comprehensive documentation for all 27 classes

- Added complete class-level documentation to all classes in qt.py
- Documented Plugin, BalWindow, BalDialog, BalBuildWillDialog
- Added documentation for all UI components (18 classes)
- Added documentation for all utility classes (7 classes)
- Added documentation for all logic classes (2 classes)
- Updated version from 0.2.9 to 0.2.10

Documentation Coverage: 100% (27/27 classes documented)

Classes Documented:
✅ Plugin - Main plugin class
✅ BalWindow - Main application window
✅ BalDialog - Base dialog class
✅ BalBuildWillDialog - Progress dialog with message queue
✅ HeirListWidget - Table widget for heirs
✅ PreviewList - Will preview widget
✅ BalWizardDialog - Base wizard dialog
✅ BalWizardWidget - Base wizard widget
✅ BalWaitingDialog - Progress dialog
✅ WillExecutorWidget - Transaction executor
✅ All 17 remaining classes

Each class includes:
- Class purpose and functionality overview
- Complete attribute list with types
- Usage examples
- Inheritance hierarchy
- Signal documentation
- Method documentation

Google-style docstrings for consistency
Ready for code review and maintenance

Fixes #documentation

manifest.json

@@ -1,7 +1,7 @@
 {
  "name": "BAL",
  "fullname": "Bitcoin After Life",
- "description": "Provides free and decentralized inheritance support<br> Version: 0.2.7",
+ "description": "Provides free and decentralized inheritance support<br> Version: 0.2.10",
  "author":"Svatantrya",
  "available_for": ["qt"],
  "icon":"icons/bal32x32.png"