Store lever state

src/js/game/components/lever.js

@@ -1,10 +1,17 @@
 import { Component } from "../component";
+import { types } from "../../savegame/serialization";
 
 export class LeverComponent extends Component {
     static getId() {
         return "Lever";
     }
 
+    static getSchema() {
+        return {
+            toggled: types.bool,
+        };
+    }
+
     duplicateWithoutContents() {
         return new LeverComponent({ toggled: this.toggled });
     }