Add /run/user/$UID to possible IPC Paths

[SammCheese]

After a bit of research, i've found out that Discord added their discord-ipc-? file to that path for me.
This PR should fix rich presences not appearing for some people

[0e4ef622]

You also need to make a similar change in main.c, although surprising to hear it worked without that.

(Usually /run/user/$UID is what $XDG_RUNTIME_DIR gets set to so maybe the bridge sees that but the script doesn't?)

[SammCheese]

Main.c does not need to be edited since the full path (/run/user/$UID/discord-ipc-X) fits the pre-existing "%s/discord-ipc-%d"

EDIT: Nevermind the garbage i was saying here. XDG_RUNTIME_DIR points to /run/user/$UID, which is why it still works.

[0e4ef622]

Right and the script also uses $XDG_RUNTIME_DIR so I'm just curious why this is even necessary.

[SammCheese]

Right and the script also uses $XDG_RUNTIME_DIR so I'm just curious why this is even necessary.

So am i to be honest, but without that change it just doesnt work.