Put file editing behind an experiment (#98)

src/lib/schemas.ts

@@ -98,6 +98,7 @@ export type Supabase = z.infer<typeof SupabaseSchema>;
 export const ExperimentsSchema = z.object({
   // Deprecated
   enableSupabaseIntegration: z.boolean().describe("DEPRECATED").optional(),
+  enableFileEditing: z.boolean().optional(),
 });
 export type Experiments = z.infer<typeof ExperimentsSchema>;