added simkl login to backend

frontend/wailsjs/go/main/App.d.ts

@@ -14,4 +14,8 @@ export function GetAniListLoggedInUserId():Promise<main.AniListUser>;
 
 export function GetAniListUserWatchingList(arg1:number,arg2:number,arg3:string):Promise<main.AniListCurrentUserWatchList>;
 
+export function GetSimklLoggedInUserId():Promise<main.SimklUser>;
+
 export function Greet(arg1:string):Promise<string>;
+
+export function SimklLogin():Promise<void>;