Add S3 caching and automated tests

backend/src/database/database.service.ts

@@ -25,7 +25,7 @@ export class DatabaseService {
     })
       .then(value => this.prismaClient.seasons.findUnique({
       where: {
-        season_id: (!seasonId ? value : seasonId)
+        season_id: Number((!seasonId ? value : seasonId))
       }
     }) as Promise<seasons>)
       .then((result: SeasonInfo) => {