Contrib: add progress notify script

[fwsmit]

Add progress notify script for audio and brightness notifications

[codecov-io]

Codecov Report

Merging #791 (c730091) into master (732227e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #791   +/-   ##
=======================================
  Coverage   65.31%   65.31%           
=======================================
  Files          30       30           
  Lines        5244     5244           
=======================================
  Hits         3425     3425           
  Misses       1819     1819           

Flag	Coverage Δ
unittests	65.31% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 732227e...c730091. Read the comment docs.

[tsipinakis]

Great addition, thanks!

Now, I should probably set something like this up for my system :)

[fwsmit]

Yeah I made this for myself as well, but I figured I could write some documentation for it and make a PR.