Add onClientObjectMoveStart, onClientObjectMoveStop, isObjectMoving

[fresholia]

Fixes #874
Added 2 events 1 functions:

bool isObjectMoving(object)
event onClientObjectMoveStart
event onClientObjectMoveStop

Code on lua:

local obj = createObject(5239, -2417.22339, -606.70374, 132.56250)
moveObject(obj, 3000, -2417.22339, -606.70374, 137.56250)

addEventHandler("onClientObjectMoveStart", obj,
    function()

    end
)

addEventHandler("onClientObjectMoveStop", obj,
    function()
        outputChatBox("done")
    end
)
setTimer(
    function()
        outputChatBox(tostring(isObjectMoving(obj)))
    end,
500, 0)

[Lpsd]

Small thing, single-line ifs like this:

if (true)
    foo.DoSomething();

[Lpsd]

Looks good, left you one thing to deal with.

[Lpsd]

Good work, just fix that extra newline and we're good.

[patrikjuvonen]

@cleopatradev Please create new Wiki pages for these events and the function, thank you.
https://wiki.multitheftauto.com/wiki/Main_Page