feat(phone-input): integrate phone number input component and validation

- Added `libphonenumber-js` dependency for improved phone number handling.
- Refactored `CreateAdmin` form to utilize a new `PhoneNumberInput` component with validation rules.
- Updated `useCreateAdminPresenter` to normalize phone number input before submission.
- Enhanced error messages for phone validation in `Texts` constant.
- Modified `User` schema to validate phone numbers using E.164 format.

src/constants/phone-countries.ts

@@ -0,0 +1,22 @@
+import { getCountryLabel } from "@/lib/phone/e164";
+import { getCountries, getCountryCallingCode } from "libphonenumber-js";
+import type { CountryCode } from "libphonenumber-js";
+import type { ILabelValue } from "@/types/shared";
+
+export type PhoneCountryOption = ILabelValue<CountryCode> & {
+  callingCode: string;
+};
+
+export const PHONE_COUNTRIES: PhoneCountryOption[] = getCountries()
+  .map((code) => {
+    const callingCode = getCountryCallingCode(code);
+    const name = getCountryLabel(code);
+    return {
+      value: code,
+      label: `${name} (+${callingCode})`,
+      callingCode,
+    };
+  })
+  .sort((a, b) => a.label.localeCompare(b.label, undefined, { sensitivity: "base" }));
+
+export const DEFAULT_PHONE_COUNTRY: CountryCode = "US";