Feedback on unsupported types

[olirice]

When a user creates a FDW with an unsupported type, can we reject it with an informative error at creation time rather than at query time?

From User Feedback
https://www.notion.so/supabase/team-postgres-16cf7874025b4b5daf89797af70ce739?p=2693f8cc666a4a3cbd6aee0d2da41223&pm=s

[kiwicopple]

@olirice - let me know if this solves the issue

[olirice]

that PR looks great but this issue is about throwing an error programatically if an unsupported type is referenced from within any wrapper. It would be a framework level change, so I'll leave this open