ctl: interactive shell with history, editing and completion

`rsp ctl` opens a prompt in the spirit of bluetoothctl. Lines are parsed with
the same clap definitions as the one-shot CLI, so every command and flag works
exactly as it does from a terminal, `help <command>` included.

Tab completes subcommands, and track/album/artist paths for `play` through
`db-complete` (run out of process, keeping its 100 ms timeout away from the
input loop). History lives in the state directory. Piped input falls back to a
plain line loop, so `rsp ctl < commands` works without a terminal.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 189c376..fe0a3b6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,7 @@ pub fn debug_eprintln(args: core::fmt::Arguments<'_>) {
 pub mod audio;
 pub mod cli;
 pub mod config;
+pub mod ctl;
 pub mod daemon;
 pub mod database;
 pub mod mpris;