Everybody can spam players' chat with print() ran on SFScreen

[Cenius]

This. Needed some restriction like this:

    function SF.DefaultEnvironment.print(s)
        if SF.instance.player == LocalPlayer() then
            LocalPlayer():PrintMessage(HUD_PRINTTALK, tostring(s))
        end
    end

[daranable]

This will be fixed soon, I am working on a strong Permissions system. This will simply be handled by not allowing the function to run if the owner of the screen isn't the owner of the chip.

Alternatively We can find some better ways to handle it, for instance, if the player recently used the screen, or is actively looking at it, allowing the screen to print. And we can also limit it at that point to not allow the screen to print more than twice a second or something like that.

Those alternatives will cost more, but yeah.