Rework search to return a list

Like a proper search would!"

wailstypes.go

@@ -28,6 +28,11 @@ type (
 		Success bool             `json:"success"`
 		Error   string           `json:"error,omitempty"`
 	}
+	WailsFoodSearch struct {
+		Data    []FoodSearch `json:"data"`
+		Success bool         `json:"success"`
+		Error   string       `json:"error,omitempty"`
+	}
 
 	WailsWeight struct {
 		Data    []Weight `json:"data"`