Save input mappings to disk

src/app.rs

@@ -17,6 +17,7 @@ use crate::{
     controller::ControllerManager,
     emulator::{EmulatorClient, EmulatorCommand, SimId},
     input::MappingProvider,
+    persistence::Persistence,
     window::{AppWindow, GameWindow, InputWindow},
 };
 
@@ -44,7 +45,8 @@ pub struct Application {
 impl Application {
     pub fn new(client: EmulatorClient, proxy: EventLoopProxy<UserEvent>) -> Self {
         let icon = load_icon().ok().map(Arc::new);
-        let mappings = MappingProvider::new();
+        let persistence = Persistence::new();
+        let mappings = MappingProvider::new(persistence);
         let controllers = ControllerManager::new(client.clone(), &mappings);
         {
             let mappings = mappings.clone();