syntax highlighting added to texteditor class

Hi ppl,

I added my systax highlighting functionalities to texteditor mui class to see changes



TwinsIDE don't use texteditor class , you can see more clear, visible plus i cloned murks visual look.

I won't be breaking functionality of texteditor class since its developed for all amiga like os.

And I can not commit changes using owb so I am going to focus on TwinsIDE.