unify default configs

the definitions are unified alright. it's just not supported yet :D

the idea being that tek offers to write out the default configs to
~/.config/tek-v0 where the user can customize them.

crates/app/src/lib.rs

@@ -36,6 +36,7 @@ pub(crate) use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering::Relaxed};
 
 mod api;    pub use self::api::*;
 mod audio;  pub use self::audio::*;
+mod config; pub use self::config::*;
 mod model;  pub use self::model::*;
 mod view;   pub use self::view::*;