input: def form_submission(name: str, email: str, phone: str) -> bool:
      """ Adds user data from form to a SQLite database.
      Returns True if the data is successfully added, otherwise False.
      >>> form_submission('John Doe', 'john@example.com', '123-456-7890')
      True
      >>> form_submission('Jane Smith', 'jane.smith@example.com', '098-765-4321')
      True
      """
output:     import sqlite3
  
      try:
          conn = sqlite3.connect('user_data.db')
          cursor = conn.cursor()
          
          cursor.execute('''
              CREATE TABLE IF NOT EXISTS users (
                  id INTEGER PRIMARY KEY AUTOINCREMENT,
                  name TEXT NOT NULL,
                  email TEXT NOT NULL UNIQUE,
                  phone TEXT NOT NULL UNIQUE
              )
          ''')
          
          cursor.execute('''
              INSERT INTO users (name, email, phone)
              VALUES (?, ?, ?)
          ''', (name, email, phone))
          
          conn.commit()
          conn.close()
          return True
      except sqlite3.Error as e:
          print(f"An error occurred: {e}")
          return False