[BD-46] Segment event refactoring

[PKulkoRaccoonGang]

To track user interest in Paragon functionality, we use the track segment of events:

global.analytics.track('openedx.paragon.docs.leave_feedback.clicked');

It would be a good idea to create a definition file and declare all segment events as exportable constants. It will be a plus for Paragon developers to have a single access point to these events + add a common naming pattern for the event segment as a header to this file with constants (openedx.paragon.event_environment.event_name.event_action).

const sendSegmentTrack = (context) => global.analytics.track('openedx.paragon.docs.icons-table.selected-icon.copied', context);

sendSegmentTrack({ name: currentIcon });

[PKulkoRaccoonGang]

PR: #2840