[EDL][OSD] Add setting to avoid commbreak notification

[enen92]

Description

This PR adds an advanced setting to allow the user to avoid showing the edl commbreak notifications (they display by default)

<advancedsettings version="1.0">
        <edl>
		<displaycommbreaknotifications>false</displaycommbreaknotifications>
	</edl>
</advancedsettings>

Motivation and context

Improve EDL usability

How has this been tested?

Runtime tested

What is the effect on users?

They may hide the notification that's shown when reaching EDL blocks.

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed

[lrusak]

Code changes look fine 👍

[enen92]

Merging this as it has lukas "approval"

[enen92]

jenkins build and merge

[ksooo]

Not sure this actually should be a GUI setting. I see this more as an advanced setting, if needed at all, because I consider this a real edge case. Just my 2ct, however.

[enen92]

There was one place missing where this notification was also triggered: if it started right at second 0 (demuxer initial position). Adjusted on the last revision and squashed.

[enen92]

Will move this to an advanced setting.

[ksooo]

LGTM

[enen92]

changed to m_EdlDisplayCommbreakNotifications for consistency on the last force-push (no functional changes)