adding new qubes.LockScreen and cooresponding policy file for issue:

[maltfield]

• Lock Screen qrexec service qubes-issues#5893

[codecov]

Codecov Report

Merging #349 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #349   +/-   ##
=======================================
  Coverage   63.87%   63.87%           
=======================================
  Files          49       49           
  Lines        9112     9112           
=======================================
  Hits         5820     5820           
  Misses       3292     3292           

Flag	Coverage Δ
#unittests	63.87% <ø> (ø)

---

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 a230a72...3c623cc. Read the comment docs.