Add Input functionality to Ultra

- Add point InSpace check to PD::Li::Math
- Add Universal AlignmentCenter flag for Horizontal and and Vertical Alignment
-  Add Fallbackfont to Layout (if you dont want to set font per object)
- Add Button Object WIP
- Rename OnHover to OnFocus and add OnUnfocus
- Move font and FontScale to ElementBase (for fallback logic etc)
- Add UpdateInput func to ElementBase
- Corectly Set fontScale in Text Rendering
- Update ecample

include/pd/ultra/layout.hpp

@@ -11,7 +11,15 @@ class PD_API Layout : public Container {
   Layout() {}
   ~Layout() {}
 
+  /**
+   * Set a fallback font if you dont want to explicitly set a font for every
+   * objectt individually
+   */
+  void SetFont(PD::Li::Font& font) { pFont = &font; }
   void Render(PD::Li::Drawlist& list);
+
+ private:
+  PD::Li::Font* pFont = nullptr;
 };
 }  // namespace Ultra
 }  // namespace PD