feat: add PLAYER_EVENT_ON_CAN_GROUP_INVITE

[r-o-b-o-t-o]

Adds a new Player event:

PLAYER_EVENT_ON_CAN_GROUP_INVITE = 55 // (event, player, memberName) - Can return false to prevent inviting

Example Lua snippet:

local PLAYER_EVENT_ON_CAN_GROUP_INVITE = 55

RegisterPlayerEvent(PLAYER_EVENT_ON_CAN_GROUP_INVITE, function(event, player, newMemberName)
	print("Player: " .. player:GetName())
	print("Invited: " .. newMemberName)

	return false -- prevent inviting
end)