Allow hangouts/meet link to be included in an event (#1110)

src/GamCommands.txt

@@ -1004,6 +1004,7 @@ The following attributes are equivalent:
 	(end (allday <Date>)|<Time>)|
 	guestscantinviteothers|
 	guestscantseeothers|
+	hangoutsmeet|
 	(id <String>)|
 	(location <String>)|
 	(noreminders| (reminder <Number> email|popup|sms))|

src/gam.py

@@ -3724,6 +3724,9 @@ def doCalendarAddEvent():
     elif myarg == 'colorindex':
       body['colorId'] = getInteger(sys.argv[i+1], myarg, CALENDAR_EVENT_MIN_COLOR_INDEX, CALENDAR_EVENT_MAX_COLOR_INDEX)
       i += 2
+    elif myarg == 'hangoutsmeet':
+      body['conferenceData'] = {'createRequest': {'requestId': f'{str(uuid.uuid4())}'}}
+      i += 1
     else:
       controlflow.invalid_argument_exit(sys.argv[i], "gam calendar <email> addevent")
   if ('recurrence' in body) and (('start' in body) or ('end' in body)):