feat: add oauth schema

api/core/plugin/entities/oauth.py

@@ -0,0 +1,21 @@
+from collections.abc import Sequence
+
+from pydantic import BaseModel, Field
+
+from core.entities.provider_entities import ProviderConfig
+
+
+class OAuthSchema(BaseModel):
+    """
+    OAuth schema
+    """
+
+    client_schema: Sequence[ProviderConfig] = Field(
+        default_factory=list,
+        description="client schema like client_id, client_secret, etc.",
+    )
+
+    credentials_schema: Sequence[ProviderConfig] = Field(
+        default_factory=list,
+        description="credentials schema like access_token, refresh_token, etc.",
+    )