Is possible to add text area support

[hawktang]

Is possible to add text area support

which allow multiline input instead single line only

[maartenbreddels]

Good question. We should add that!
Currently, you can take a look at

solara/solara/template/markdown.py

Line 30 in a99283c

rv.Textarea(v_model=markdown_text, on_v_model=set_markdown_text, rows=20)

for how to do that with vuetify, but I think we want a component in solara as well.

[maartenbreddels]

See also #126