Improved support for autofill in browsers

[StefanStrategis]

I have some options in mind for improving browser autofill functionality HTML Inputs.

• Add an option (for example: boolean on WebGLInput class) to add the HTML input as soon as the object is enabled. (for example for adding login and password inputs when a login window is opened)
• Add an option to add an autocomplete HTML tag (string on WebGLInput class). This can add the autocomplete tag of choice (for example "username", "password" or "email") to the HTML Input.

Both these options can improve the usage autofill data, allowing them to find fields for example for login windows or address information fields.

At the moment it mostly works in Chrome for Windows, but only after both the username and password inputs have been selected.