feat: users table and welcome videonote

repositories/users.py

@@ -0,0 +1,20 @@
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from db.models.users import User
+
+
+async def get_user(session: AsyncSession, user_id: int) -> User | None:
+    stmt = select(User).where(User.id == user_id)
+    r = await session.execute(stmt)
+
+    return r.scalar_one_or_none()
+
+async def create_user(session: AsyncSession, user_id: int) -> User:
+    user = User(
+        id=user_id
+    )
+    session.add(user)
+    await session.commit()
+
+    return user