fix: licensing issues

[Gigas002]

As discussed with @Shinyzenith on discord, we have waymirror-egl and wayshot dependent on strong copyleft licenses and have to either remove features, or change licenses to comply.
The libwayshot is unaffected.
Also added deny.toml config and corresponding job.
Locally checkable via:

cargo deny check licenses

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 16.01%. Comparing base (3e66eb5) to head (eff28cc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #311   +/-   ##
=======================================
  Coverage   16.01%   16.01%           
=======================================
  Files          23       23           
  Lines        3291     3291           
=======================================
  Hits          527      527           
  Misses       2764     2764           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Decodetalkers]

I think it's fine, as if @Shinyzenith approves, it should be merged