beginnings of artist grid and artist details view

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

@@ -7,8 +7,12 @@ export function FullRescan():Promise<library.ScanMetrics>;
 
 export function GetAlbumTracks(arg1:number):Promise<Array<library.Track>>;
 
+export function GetAlbumsByArtist(arg1:number):Promise<Array<library.Album>>;
+
 export function GetAllAlbums():Promise<Array<library.Album>>;
 
+export function GetAllArtists():Promise<Array<library.Artist>>;
+
 export function GetAllTracks():Promise<Array<library.Track>>;
 
 export function Scan():Promise<library.ScanMetrics>;

frontend/wailsjs/go/library/Library.js

@@ -10,10 +10,18 @@ export function GetAlbumTracks(arg1) {
   return window['go']['library']['Library']['GetAlbumTracks'](arg1);
 }
 
+export function GetAlbumsByArtist(arg1) {
+  return window['go']['library']['Library']['GetAlbumsByArtist'](arg1);
+}
+
 export function GetAllAlbums() {
   return window['go']['library']['Library']['GetAllAlbums']();
 }
 
+export function GetAllArtists() {
+  return window['go']['library']['Library']['GetAllArtists']();
+}
+
 export function GetAllTracks() {
   return window['go']['library']['Library']['GetAllTracks']();
 }