feat: ✨ add support for Angular 18

[juanjotorres90]

Added

• Add support for Angular 18.
• Add 'includeDialCode' option to include the dial code in the phone number input.
• Auto select number input after changing country code.
• Add support for Material 3 theming.
• Use of Signal Inputs to dynamically change the disabled or required state of the phone field.
• Add 'currentValue' output event to retrieve the current phone number value without using a FormControl.

Fixed

• Fix Northern Mariana Islands number format.

Changed

• Upgrade project to nx 19.1.
• Use of Signal Inputs for component options.
• The component is now zoneless.