add accessability to all applicable form elements

[Trilmatic]

We want to make sure the forms are as accessable as possible so we need to look if it is accorging to standards. Also we need to add aria-labelby and aria-describedby

Some reference:

https://www.w3.org/WAI/tutorials/forms/instructions/

https://webaim.org/techniques/forms/controls

https://www.a11yproject.com/posts/how-to-write-accessible-forms/

[Trilmatic]

• add aria-invalid="true" aria-describedby="validationErrorId" to validation errors
• aria-labelby is not needed as that we use labels for inputs

[Trilmatic]

Resolved in https://github.com/form-js/forms.js/releases/tag/1.0.18