feat(neswire): open the audio server

Captures a session's audio and hands it to the transport over a local socket.
Third component in, imported as a tree from `nestrilabs/neswire` on the same
terms as the previous two.

Wired to the workspace, `nesprotocol` by path. 4 tests pass.

`bin/hub-stub.rs` is a stand-in for the transport's listener, which is what lets
this be developed and tested without the rest of a box existing. It names the
transport by its old name, and is left for the rename commit along with the two
in the compositor.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Cargo.toml

@@ -14,6 +14,7 @@
 resolver = "3"
 members = [
   "apps/nescope",
+  "apps/neswire",
   "crates/nesprotocol",
 ]