PrimeNg - Improve accessibility by setting inputId

[srollinet]

Is your feature request related to a problem? Please describe.

When testing the accessibility on a formly form using PrimeNg components, a lot of issues related to missing labels are found.
This is because the inputId prop is not set in the templates.

By setting this prop, the labels are correctly attached to the controls, using for=id

Describe the solution you'd like
The templates should be modified to set [inputId]="id" when applicable

Describe alternatives you've considered
none

Additional context
none

I can make a PR if you want