Add math operators to Visual Shader node names
Add math operators to Visual Shader node names

This change makes it easy, in the "Create Shader Node" dialog, to search for VS nodes by just typing the operator. For example, instead of typing "multiply", you can just type "*" and multiply nodes will be listed.

This feature is inspired by Unreal Engine node graph editor's UX.

Implements and closes https://github.com/godotengine/godot-proposals/issues/5663

sanikoyes/godot,BastiaanOlij/godot,pkowal1982/godot,pkowal1982/godot,BastiaanOlij/godot,sanikoyes/godot,sanikoyes/godot,BastiaanOlij/godot,godotengine/godot,godotengine/godot,sanikoyes/godot,pkowal1982/godot,sanikoyes/godot,godotengine/godot,BastiaanOlij/godot,sanikoyes/godot,godotengine/godot,BastiaanOlij/godot,sanikoyes/godot,pkowal1982/godot,pkowal1982/godot,BastiaanOlij/godot,BastiaanOlij/godot,pkowal1982/godot,sanikoyes/godot,BastiaanOlij/godot,godotengine/godot,godotengine/godot,godotengine/godot,pkowal1982/godot,godotengine/godot,pkowal1982/godot