Add code to include frei0r. Refactor, add VLMC_LIBS to be used for linking multiple libraries. Add QtNetwork module, used in YouTube services.
Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Print warning before a possible assertion failure. It was seen that this part of code is reached when a possible assertion is failed. So, better print warning before quiting on an assertion failure.
Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Adds popular presets like VGA, SVGA, XVGA, 420p, 720p etc. Also, refactored to be used during video export to web, viz. YouTube etc. This way, user has freedom to config video export with custom settings for services like: YouTube, Vimeo etc.
Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Add cmake module for frei0r Also corrects includes, in some distros frie0r header are not installed in folder. The corresponding path can added in the 'Findfrei0r.cmake' module.
Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Aka code simplification before adding mixers.

This will enhance the effectsengine precision when it comes to starting
an effect or not.

The calculation may lack of precision, but that should be enough for
now.

Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Removed forgotten debug.

Fixes a crash when starting the playback.

This prepares the MainWorkflow for effects undo/redo

(If the re-init is not required, nothing will happen)