feat(client): add some theme functions

src/client/scripts/theme.ts

@@ -92,6 +92,8 @@ function compile(theme: Theme): Record<string, string> {
 				case 'darken': return color.darken(arg);
 				case 'lighten': return color.lighten(arg);
 				case 'alpha': return color.setAlpha(arg);
+				case 'hue': return color.spin(arg);
+				case 'saturate': return color.saturate(arg);
 			}
 		}