Rework lastper100 to return a food instead of float32

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

@@ -14,7 +14,7 @@ export function GetDailyWeight():Promise<main.WailsAggregateWeight>;
 
 export function GetFood():Promise<main.WailsFood>;
 
-export function GetLastPer100(arg1:string):Promise<main.WailsPer100>;
+export function GetLastPer100(arg1:string):Promise<main.WailsFood1>;
 
 export function GetMonthlyFood():Promise<main.WailsAggregateFood>;