Fixes #551 - onMarkerHit on attached elements

[MohabCodeX]

Fixes #551

Notes

observed the debug line ERROR: FIXME: CRPCFunctions::ProcessPacket - Element doesn't exist on client (AttachElements) when the attach RPC arrives on the client before the marker is fully created. This is just a timing/diagnostic warning and does not affect marker hits. It could be silenced by wrapping that log in an if that skips ATTACH_ELEMENTS/DETACH_ELEMENTS

You can just use a Timer :

setTimer(function()
    if isElement(marker) and isElement(bank) then
        attachElements(marker, bank, 0, 0, -1)
    end
end, 50, 1)