addDesignEvent et al. should produce an error if provided a player instead of a user ID

[Ozzypig-Gamefam]

The following call fails silently despite it being incorrect:

GameAnalytics:addDesignEvent(player, {
	eventId = "Buy:Apple",
})

The reason for this is that player should be player.UserId, which is not the way a good chunk of Roblox's API works. Therefore, the function should:

• Extract the userID from a provided Player object to support this call, and/or
• Produce an error immediately when called using incorrect arguments, ideally via a runtime type check library like osyris' t library