feat(utils): add email validator function

A new function `isEmail` has been added to the utils folder that validates if a given string input is a valid email address. This should help in reducing erroneous entries and improve data validation.

Signed-off-by: Mathis <yidhra@tuta.io>

src/utils/validators/email.ts

@@ -0,0 +1,4 @@
+export function isEmail(email: string) {
+	const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
+	return re.test(String(email).toLowerCase());
+}