fix: update child class property overrides to use MCRF_PROPERTY macros

Fixes critical issue discovered in code review where PyDrawable property
docstrings were being overridden by child classes, making enhanced documentation
invisible to users.

Updated files:
- src/UIBase.h: UIDRAWABLE_GETSETTERS macro (visible, opacity)
- src/UIFrame.cpp: click and z_index properties
- src/UISprite.cpp: click and z_index properties
- src/UICaption.cpp: click and z_index properties
- src/UIGrid.cpp: click and z_index properties

All four UI class hierarchies (Frame, Sprite, Caption, Grid) now expose
consistent, enhanced property documentation to Python users.

Verification:
- tools/test_child_class_docstrings.py: All 16 property tests pass
- All 4 properties (click, z_index, visible, opacity) match across all 4 classes

Related: #92 (Inline C++ documentation system)

roguelike_tutorial/mcrogueface_does_the_entire_tutorial_2025/Part_6/code/game.py

@@ -373,7 +373,7 @@ class Engine:
         
         self.ui = mcrfpy.sceneUI("game")
         
-        background = mcrfpy.Frame(0, 0, 1024, 768)
+        background = mcrfpy.Frame((0, 0), (1024, 768))
         background.fill_color = mcrfpy.Color(0, 0, 0)
         self.ui.append(background)
         
@@ -565,4 +565,4 @@ class Engine:
 # Create and run the game
 engine = Engine()
 print("Part 6: Combat System!")
-print("Attack enemies to defeat them, but watch your HP!")
+print("Attack enemies to defeat them, but watch your HP!")