feat: add new encoder and restructure project

app/db/__init__.py

@@ -0,0 +1 @@
+from .database import database, Base, engine

app/db/database.py

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+from app.config import settings
+from databases import Database
+from sqlalchemy import create_engine, MetaData
+from sqlalchemy.orm import declarative_base, sessionmaker
+
+# for Alembic migrations and sync operations
+engine = create_engine(settings.database_url)
+# to use with async requests
+database = Database(settings.database_url)
+
+metadata = MetaData()
+Base = declarative_base(metadata=metadata)
+