feat(custom-rulesets): support custom rulesets (#23)

* feat(custom_ruleset): add custom rulesets support

* feat(custom-ruleset): add version check

* feat(custom-ruleset): add LegacyIO API to get ruleset hashes

* feat(pp): add check for rulesets whose pp cannot be calculated

* docs(readme): update README to include support for custom rulesets

* fix(custom-ruleset): make `rulesets` empty instead of throw a error when version check is disabled

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* chore(custom-ruleset): apply the latest changes of generator

c891bcd159

and

e25041ad3b

* feat(calculator): add fallback performance calculation for unsupported modes

* fix(calculator): remove debug print

* fix: resolve reviews

* feat(calculator): add difficulty calculation checks

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

main.py

@@ -18,6 +18,7 @@ from app.dependencies.scheduler import start_scheduler, stop_scheduler
 from app.log import system_logger
 from app.middleware.verify_session import VerifySessionMiddleware
 from app.models.mods import init_mods, init_ranked_mods
+from app.models.score import init_ruleset_version_hash
 from app.router import (
     api_v1_router,
     api_v2_router,
@@ -37,6 +38,7 @@ from app.service.redis_message_system import redis_message_system
 from app.tasks import (
     calculate_user_rank,
     create_banchobot,
+    create_custom_ruleset_statistics,
     create_rx_statistics,
     daily_challenge_job,
     init_geoip,
@@ -61,8 +63,9 @@ async def lifespan(app: FastAPI):  # noqa: ARG001
     # init mods, achievements and performance calculator
     init_mods()
     init_ranked_mods()
+    init_ruleset_version_hash()
     load_achievements()
-    init_calculator()
+    await init_calculator()
 
     # init rate limiter
     await FastAPILimiter.init(redis_rate_limit_client)
@@ -74,6 +77,7 @@ async def lifespan(app: FastAPI):  # noqa: ARG001
 
     # init game server
     await create_rx_statistics()
+    await create_custom_ruleset_statistics()
     await calculate_user_rank(True)
     await daily_challenge_job()
     await process_daily_challenge_top()