feat(console): phone number validation with flags (#5139)

Formats the phonenumber according to the preselected country

console/src/app/utils/formatPhone.ts

@@ -0,0 +1,19 @@
+import { CountryCode, parsePhoneNumber } from 'libphonenumber-js';
+
+export function formatPhone(phone: string): { phone: string; country: CountryCode } {
+  const defaultCountry = 'CH';
+
+  if (phone) {
+    try {
+      const phoneNumber = parsePhoneNumber(phone, defaultCountry);
+      const country = phoneNumber.country ?? defaultCountry;
+      if (phoneNumber) {
+        return { phone: phoneNumber.formatInternational(), country };
+      }
+    } catch (error) {
+      console.error(error);
+    }
+  }
+
+  return { phone, country: defaultCountry };
+}