Add password type to input

[danigomez]

[andrerpena]

I'll get this one now. Izzzy.

[JonatanSalas]

@andrerpena thank you! :)

[danigomez]

Greeaaaaaat 😄

[andrerpena]

At first I wasn't sure if password was a data-type, a component or just an additional metadata for string fields.

I decided it was a component. Added a demo already (which I didn't publish).

Done.