Add current location in localstorage, fixes #13

Logic/LocalStorageSource.ts

@@ -0,0 +1,15 @@
+import {UIEventSource} from "../UI/UIEventSource";
+
+export class LocalStorageSource {
+
+    static Get(key: string, defaultValue: string = undefined): UIEventSource<string> {
+        const saved = localStorage.getItem(key);
+        const source = new UIEventSource<string>(saved ?? defaultValue);
+
+        source.addCallback((data) => {
+            localStorage.setItem(key, data);
+            console.log("Wriging ", key, data)
+        });
+        return source;
+    }
+}