feat(auth): support change password

app/router/auth.py

@@ -10,6 +10,7 @@ from app.auth import (
     get_token_by_refresh_token,
     get_user_by_authorization_code,
     store_token,
+    validate_password,
     validate_username,
 )
 from app.config import settings
@@ -68,20 +69,6 @@ def validate_email(email: str) -> list[str]:
     return errors
 
 
-def validate_password(password: str) -> list[str]:
-    """验证密码"""
-    errors = []
-
-    if not password:
-        errors.append("Password is required")
-        return errors
-
-    if len(password) < 8:
-        errors.append("Password must be at least 8 characters long")
-
-    return errors
-
-
 router = APIRouter(tags=["osu! OAuth 认证"])