Implement messageType parameter to onClientChatMessage

[Lpsd]

Resolves #1014

This PR adds the messageType parameter to the onClientChatMessage event. The possible types are as follows:

0 = player
1 = action
2 = team
3 = private
4 = internal

0, 1 and 2 follow the same structure as the onPlayerChat event.

private type is when using the /msg command
internal is for any messages sent internally by MTA (such as "login: You successfully logged in")

I have included a small test script below (clientside)

local messageTypes = {
	{id = 0, type = "player"},
	{id = 1, type = "action"},
	{id = 2, type = "team"},
	{id = 3, type = "private"},
	{id = 4, type = "internal"}
}

function getMessageTypeName(messageType)
	for i,v in ipairs(messageTypes) do
		if (tonumber(messageType) == v.id) then
			return v.type
		end
	end
	return false
end

function handleChatMessage(text, r, g, b, messageType)
	print(text, "messageType: "..messageType, getMessageTypeName(messageType))
end
addEventHandler("onClientChatMessage", root, handleChatMessage)

Also fixed a couple of typos already present in the code.

[CrosRoad95]

as someone said some time ago: enum should be returned as string, not a number

[Lpsd]

@CrosRoad95 I have kept this consistent with onPlayerChat, which returns an integer

[moon91210]

I need this for a gamemode I'm working on. Could someone review this PR?

[qaisjp]

bitstream needs bump

[patrikjuvonen]

Looks good, tested working. Thanks @Lpsd and @StrixG.