removed app, reorganized logic into modules

frontend/src/assets/scripts/main.js

@@ -1,4 +1,5 @@
-import { DirectoryPicker, GetLibraryDir} from '../../../wailsjs/go/main/App';
+import { DirectoryPicker } from '../../../wailsjs/go/frontendbindings/FrontendBindings';
+import { GetDir as GetLibraryDir } from '../../../wailsjs/go/library/Library';
 import { Play } from '../../../wailsjs/go/player/Player';
 
 
@@ -15,7 +16,7 @@ window.onPlayPauseButtonClick = function() {
   try {
     Play().then((result) => {
       console.log(result)
-      playPauseButton.setAttribute("src", "/src/assets/images/icons/music/pause-solid.svg")
+      playPauseButtonIcon.setAttribute("src", "/src/assets/images/icons/music/pause-solid.svg")
     }).catch((err) => {
       console.log("There is an error with playing")
       console.error(err);
@@ -27,7 +28,6 @@ window.onPlayPauseButtonClick = function() {
 }
 
 window.dirPicker = function() {
-  var dir;
   try {
     DirectoryPicker()
       .then((result) => { window.updateLibraryDirLabel(result); })