feature(database-connection): Add type aliases for responses

backend/src/models/aliases.ts

@@ -0,0 +1,6 @@
+import { ranks, seasons, timetracker, user } from '@prisma/client';
+import { TableEntry } from './TableEntry';
+
+export type TimeTrackerStats = timetracker & { user: user; ranks: ranks; }
+export type SeasonInfo = seasons & { maxSeasonId: number }
+export type UserStatsResponse = SeasonInfo & TableEntry[]