use tui_textarea for input box

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 33 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/ui/app.rs	0.0%	14 Missing :warning:
src/ui/mod.rs	0.0%	12 Missing :warning:
src/ui/input_box.rs	0.0%	7 Missing :warning:

Files with missing lines	Coverage Δ
src/ui/input_box.rs	0.0% <0.0%> (ø)
src/ui/mod.rs	0.0% <0.0%> (ø)
src/ui/app.rs	0.0% <0.0%> (ø)