Add state handler implementations and documentation

- Implemented StateHandler class with methods for entering, exiting, and updating states.
- Created TypeStateHandler for handling typing state with appropriate animations and transitions.
- Developed WaitStateHandler for managing idle state with quirk animations.
- Added JSDoc documentation for all new classes and methods.
- Included CSS styles for documentation formatting and syntax highlighting.

.gitignore

@@ -2,8 +2,8 @@
 *.tmp
 *.temp
 
-# Documentation output
-/docs/
+# # Documentation output
+# /docs/
 
 # Animation assets (if storing locally)
 /assets/models/