[FEATURE] Make text box size of TextQuestion adjustable

[MoritzLaurer]

Is your feature request related to a problem? Please describe.
The text box of a TextQuestion is by default 5 rows high (the height is partially adjusted depending on screen size I think). Problems:

1. When I have many different questions, including text questions, the questions don't fit on the screen anymore and users are forced to scroll down.
2. The default size of the text box also conveys a certain expectation of the expected text input length, while sometimes one might to nudge the annotator towards writing shorter or longer texts.

Describe the solution you'd like
Add a parameter to TextQuestion such as n_rows, which enforces how high / how many text rows the empty text field has when it is initially shown.

Describe alternatives you've considered
None, but I might be missing something.

Additional context
This feature would be nice to have, but not super important/ not urgent.

[nataliaElv]

hey @MoritzLaurer ! Could you check if the new flexible text boxes from version 2.1.0 would fix your issue?