refactor: folders/files to group dsp logic

src-tauri/src/state.rs

@@ -1,6 +1,6 @@
-use std::sync::{Mutex, Arc};
-use std::collections::HashMap;
 use dsp_thomann::dsp408::DSP408;
+use std::collections::HashMap;
+use std::sync::{Arc, Mutex};
 
 pub struct DSPDevice {
     pub dsp: DSP408,
@@ -18,4 +18,4 @@ impl AppState {
             next_id: Mutex::new(1),
         }
     }
-}
+}