Build an Alternate Constructor from a String

Add a class EmailContact that stores first_name, last_name, and email. Implement a classmethod from_string(cls, s) which accepts input in any of these formats: - 'First Last <email@example.com>' - 'Last, First <email@example.com>' - 'email@example.com' (no name) Behavior and rules: - Whitespace around parts should be ignored. - If a name is present, split it into first and last. For 'Last, First' treat the comma-separated parts appropriately. - For a single-word name (e.g., 'SingleName <a@b.com>'), treat it as a first name and leave last name empty. - The resulting instance should expose a display_name property (title-cased, same rules as the previous lesson) and an email attribute containing the stripped email string. Implement from_string so callers can write EmailContact.from_string(text) to obtain a properly populated instance.

Implement EmailContact.from_string as a robust alternate constructor that can parse names and emails from strings like 'John Doe <john@example.com>' or 'Doe, John <john@example.com>' and also handle bare email addresses.

- Do not use third-party libraries. - Handle extra whitespace and both 'First Last' and 'Last, First' name styles. - Keep parsing logic straightforward and robust enough for the covered formats.