Feature/plot input data bytes

[burke-david]

Modified the UI and also added the ability to dump serial data directly to the lv_textarea and lv_chart widgets

[github-actions]

TEST RESULTS:
Total tests: 6
Passed: 6
Failed: 0
Ignored: 0

Creating gcov results report(s) in 'build/artifacts/gcov'... Done in 0.299 seconds.
Creating a gcov text report... Done in 0.097 seconds.

                       GCC Code Coverage Report

Directory: .

File Lines Exec Cover Missing

src/buffer/ring_buf.c 38 38 100%

TOTAL 38 38 100%