[FEATURE] make TextArea impl more similar to EditView

[inferrna]

For example: both EditView and TextArea can be disabled or enabled but TextArea miss with_enabled function which EditView has. Or EditView has great set_on_edit but TextArea hasn't, etc

In my personal case I just found that EditView is not enough for my use-cases, but migrating to TextArea is not that simple.

[gyscos]

Hi, and thanks for the report!

These are very good points, we should make them more consistent.