Organize assets into Fonts and Models folders

Move font (arialroundedmtprocyr_bold) into Assets/Fonts and the Paintman
model, animations, and animator controller into Assets/Models. Pure file
relocation; .meta files moved alongside their assets so GUIDs are preserved.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Assets/Models/Paintman-Idle.anim.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 18925b0fe0029224aa6d9f4d9ca9ab72
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 7400000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: