Update meta.xml

- Added ghost_hider.lua script, if working as intended.

Author: AlfredoAnonym

[gamemodes]/[race]/[addons]/race_ghost/meta.xml

@@ -6,6 +6,7 @@
 	<script src="record_server.lua" type="server" />
 	<script src="playback_server.lua" type="server" />
 	<script src="xtra_stuff_server.lua" type="server" />
+	<script src="ghost_hider.lua" type="client" />
 
 	<script src="global_client.lua" type="client" />
 	<script src="record_client.lua" type="client" />