Saltychat Remove and PMA install

resources/[voice]/pma-voice/docs/server-setters/addChannelCheck.md

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+## addChannelCheck
+
+## Description
+
+Adds a channel check to radio channels.
+
+## Parameters
+
+* **channel**: The channel to add the check to.
+* **function**: the function to call when the check is triggered, which should return a boolean of if the player is allowed to join the channel..
+
+
+```lua
+-- Example for addChannelCheck
+-- this always has to return true/false
+exports['pma-voice']:addChannelCheck(1, function(source)
+	if IsPlayerAceAllowed(source, 'radio.police') then
+		return true
+	end
+	return false
+end)
+```