refactor(frontend): 🔥 rewrite backup UI for new page base components

Removed old split code and used the composition api to to re-write the import/export functionality of mealie.

frontend/composables/use-api.ts

@@ -53,6 +53,7 @@ function getRequests(axoisInstance: NuxtAxiosInstance): ApiRequestInstance {
   return requests;
 }
 
+
 export const useApiSingleton = function (): Api {
   const { $axios } = useContext();
   const requests = getRequests($axios);