Add HarmonyOS Sans font and implement QuickUI for text handling

- Imported HarmonyOS Sans Regular font with appropriate settings for rendering and fallback.
- Created QuickUI script to facilitate the creation of small text labels with optional centering.
- Added new theme resources for big bold text and small text, defining font sizes for RichTextLabel and Label respectively.

project.godot

@@ -19,6 +19,10 @@ config/icon="res://icon.svg"
 
 project/assembly_name="ChickenVSBear"
 
+[gui]
+
+theme/custom_font="res://resources/fonts/HarmonyOS_Sans_Regular.ttf"
+
 [input]
 
 m_up={