feat(pp-calculator): support other pp calculators (#57)

New configurations:

- CALCULATOR="rosu": specific pp calculator
- CALCULATOR_CONFIG='{}': argument passed through into calculator

docker-compose-osurx.yml

@@ -17,6 +17,8 @@ services:
       - ENABLE_ALL_MODS_PP=true
       - ENABLE_SUPPORTER_FOR_ALL_USERS=true
       - ENABLE_ALL_BEATMAP_LEADERBOARD=true
+      # - CALCULATOR=performance_server
+      # - CALCULATOR_CONFIG='{"server_url":"http://performance-server:8080"}'
     env_file:
       - .env
     depends_on:
@@ -109,6 +111,15 @@ services:
     networks:
       - osu-network
 
+  # performance-server:
+  #   image: ghcr.io/googuteam/osu-performance-server-osurx:custom-rulesets
+  #   container_name: performance_server_osurx
+  #   environment:
+  #     - SAVE_BEATMAP_FILES=false
+  #   restart: unless-stopped
+  #   networks:
+  #     - osu-network
+
 volumes:
   mysql_data:
   redis_data: