Block spectators

@Rider_of_Theli said in #10:
> The only point to be spectating instead of analyzing post-mortem is to comment in real time
Definitely not. If that were the case, why would there be the "Lichess TV", for example? It's quite common to spectate games of your frieds, other games in a tournament you are playing, your teammates in 4545 League etc.

> comment in real time ,which is something we could call "mild cheating" but still unfair for the player that is not being coached or receiving commentary
Commenting in real time is perfectly fine, I do it quite often. As the players don't see spectator chat until the game is finished, it has nothing to do with fair play violation. If they are using some other channel than spectator chat or if an active player works around the limitation to visit the game chat, it would violate a fair play but obviously you don't really need to watch the game on lichess for this kind of cheating.

In other words, disabling the possibility to spectate live games would not prevent the kind of fair play violations you are afraid of but would prevent other, perfectly legitimate, use cases.

I have nothing against my friends spectating, or league spectating, or tournament spectating. That is one thing. Other thing is people I don't know spectating my 1 vs 1 game.

When I say commenting I mean chat in real time between the spectator and my opponent in a game he is playing against me outside any kind of event. That has happened to me enough times that I care to write these posts. Last time I actually messaged both persons and they responded like I have mentioned above. You don't really need to watch the game on lichess, but it facilitates this kind of behavior a lot, so it doesn't prevent it, but at least doesn't make it so easy. Otherwise the players would need software to share screen or a good camera pointing at the screen. Nothing out of this world but definitely more cumbersome than spectating the game and just talk on a video or phone call or discord or whatever.

As I said before, the idea would be to have the choice to disable spectator for your 1 vs 1 random games, if you join a public arena or tournament, or it's a league game, it should allow spectators by default disregarding user settings.

@Rider_of_Theli said in #12:
> When I say commenting I mean chat in real time between the spectator and my opponent in a game he is playing against me outside any kind of event.
What I wanted to point out that this (potential) problem is completely independent of spectating.

> That has happened to me enough times that I care to write these posts.
How do you know? Did they tell you every time? After all, you played only 29 games in total so far, 19 blitz and 10 rapid. What should we imagine under "enough times"?

Anyway, if you are confident enough that your opponent violated the fair play policy, reporting them is the way to go. But I have serious doubts, to be honest.

> Otherwise the players would need software to share screen or a good camera pointing at the screen. Nothing out of this world but definitely more cumbersome than spectating the game and just talk on a video or phone call or discord or whatever.
Is it? Almost every common software for video calls (which is more common today than audio only communication software) has a function to share screen or selected window. So if they open a call anyway, sharing the lichess game is trivial.