Play project using URL

[Manvel]

Background

CBA users would like to trigger project playback using URL, so they can use 3-rd party schedulers and bookmarks for playing projects(See also #97). Even though this functionality seem to be a great idea we should protect our users from misuse of such functions and for that reason we should:

• Make the functionality opt-in.
• Inform users about how this action can be mis-used to get their consent in advance.

What to change

• Introduce a checkbox/toggle for URL playback in the options page.
• Create page (i.e. https://chrome-automation.com/url-playback) that explains the functionality and how to enable it.
• Hovering the checkbox should open the cba-tooltip with the warning explaining that actions will be played as soon the triggering URL is open and linking to https://chrome-automation.com/url-playback for further information(TBA).
• Cover implementation with tests ensuring that that URL playback only is available when opt-in.

Additional notes

• Use CBA object for storing the state.