Patch - Improves code and UI for better engine stability - V14.5.30

Addresses minor issues across the engine to improve stability and UI.

- Updates ImGui window size for better rendering
- Adds macro for boolean returns (R_TRUE and R_FALSE)
- Adds missing includes and removes unused code
- Updates shader code to use the new macros and improve readability

enginecustom/src/inc/system/input_class.h

@@ -45,12 +45,6 @@ public:
 	bool IsScrollDown() const;
 	bool IsUpArrowPressed() const;
 	bool IsDownArrowPressed() const;
-	bool IsAPressed() const;
-	bool IsDPressed() const;
-	bool IsWPressed() const;
-	bool IsSPressed() const;
-	bool IsQPressed() const;
-	bool IsEPressed()const;
 	bool IsKeyDown(unsigned int) const;
 	bool is_key_pressed(const unsigned int);