Extract paths out of util (#13182)

This PR extracts the definition of the various Zed paths out of `util`
and into a new `paths` crate.

`util` is for generic utils, while these paths are Zed-specific. For
instance, `gpui` depends on `util`, and it shouldn't have knowledge of
these paths, since they are only used by Zed.

Release Notes:

- N/A

crates/zed/src/reliability.rs

@@ -22,7 +22,7 @@ use std::{io::Write, panic, sync::atomic::AtomicU32, thread};
 use telemetry_events::LocationData;
 use telemetry_events::Panic;
 use telemetry_events::PanicRequest;
-use util::{paths, ResultExt};
+use util::ResultExt;
 
 use crate::stdout_is_a_pty;
 static PANIC_COUNT: AtomicU32 = AtomicU32::new(0);