library picker lit element w reactive properties

frontend/wailsjs/go/library/Library.d.ts

@@ -5,3 +5,5 @@ import {context} from '../models';
 export function GetDir():Promise<string>;
 
 export function Init(arg1:context.Context):Promise<void>;
+
+export function SetDir(arg1:string):Promise<void>;

frontend/wailsjs/go/library/Library.js

@@ -9,3 +9,7 @@ export function GetDir() {
 export function Init(arg1) {
   return window['go']['library']['Library']['Init'](arg1);
 }
+
+export function SetDir(arg1) {
+  return window['go']['library']['Library']['SetDir'](arg1);
+}