✨ Add Sheet -> create/remove to GoogleSheets node(#1620)

* Add operation 'addSheet' to GoogleSheets node

* lint fixes

* ⚡ Improvements

* ⚡ Move operations to "Sheet"

Co-authored-by: dali <servfrdali@yahoo.fr>
Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/nodes/Google/Sheet/GenericFunctions.ts

@@ -127,3 +127,19 @@ function getAccessToken(this: IExecuteFunctions | IExecuteSingleFunctions | ILoa
 	//@ts-ignore
 	return this.helpers.request(options);
 }
+
+// Hex to RGB
+export function hexToRgb(hex: string) {
+	// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
+	const shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
+	hex = hex.replace(shorthandRegex, (m, r, g, b) => {
+		return r + r + g + g + b + b;
+	});
+
+	const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
+	return result ? {
+		red: parseInt(result[1], 16),
+		green: parseInt(result[2], 16),
+		blue: parseInt(result[3], 16),
+	} : null;
+}