fix: solver functions get response

Author: giancarloromeo

packages/models-library/src/models_library/api_schemas_webserver/functions.py

@@ -116,6 +116,10 @@
 
 class RegisteredSolverFunctionGet(RegisteredSolverFunction, OutputSchema):
     uid: Annotated[FunctionID, Field(alias="uuid")]
+    created_at: Annotated[datetime.datetime, Field(alias="creationDate")]
+    modified_at: Annotated[datetime.datetime, Field(alias="lastChangeDate")]
+    access_rights: FunctionAccessRights | None = None
+    thumbnail: str | None = None
 
 
 class RegisteredProjectFunctionGet(RegisteredProjectFunction, OutputSchema):