feat: introduce pydantic-settings for config definition and validation (#5202)

Co-authored-by: -LAN- <laipz8200@outlook.com>

api/configs/extra/__init__.py

@@ -0,0 +1,12 @@
+from pydantic import BaseModel
+
+from configs.extra.notion_configs import NotionConfigs
+from configs.extra.sentry_configs import SentryConfigs
+
+
+class ExtraServiceConfigs(
+    # place the configs in alphabet order
+    NotionConfigs,
+    SentryConfigs,
+):
+    pass