CLI: Explicitely wait for user interrupt (-k) and flush stdout each line.

tests: IDE: fix again debug_project, making it hopefully more stable

wxPython4 sequels: fix Wx exceptions ignored because no traceback

Some exception triggered on wxPython side have None as traceback,
and exception hanlder was discarding them.

tests: IDE: prevent edit_project to save modifed example so that it doesn't influence following tests

tests: IDE: force reporting screenshot even after failing command

tests: CLI: add simple test running python example

tests: docker: add dependencies for CLI testing

tests: add support for CLI tests

tests: fix debug_project.sikuli again.
- tooltip and context menu overlap
- text not being replaced in forcing dialog

CLI: prevent LOCAL:// runtime to use GUI (tray icon) when launch from CLI.

Merge latest changes from default

wxPython4 sequels: fix exception in connection dialog, force black text in FBD.

- wxPython4 does not have RemoveSizer in API anymore.
- On GTK3 with dark theme default text colour is white, making it unreadable.

SVGHMI: fix js exception because of trying to find already detached elements by id.

SVGHMI: better handling of page switch fade-out.

- In cases or relative jump to current page, page was keeping black after switch.
- Now keep track of undergoing page switch without comparing subscribed page to visible page.

tests: nore details, please

Github CI: upload artifact (reports) when failing