fix: constant module name typo (#227)

Author: nuugen

spotify_player/src/state/consant.rs spotify_player/src/state/constant.rsspotify_player/src/state/consant.rs renamed to spotify_player/src/state/constant.rs

@@ -1,10 +1,10 @@
-mod consant;
+mod constant;
 mod data;
 mod model;
 mod player;
 mod ui;
 
-pub use consant::*;
+pub use constant::*;
 pub use data::*;
 pub use model::*;
 pub use player::*;