feat: impl directory delete

Co-authored-by: Ona <no-reply@ona.com>

convex/model/error.ts

@@ -0,0 +1,24 @@
+import { ConvexError } from "convex/values"
+
+export enum Code {
+	DirectoryExists = "DirectoryExists",
+	FileExists = "FileExists",
+	Internal = "Internal",
+}
+
+export type ApplicationError = ConvexError<{ code: Code; message: string }>
+
+export function isApplicationError(error: unknown): error is ApplicationError {
+	return (
+		error instanceof ConvexError &&
+		"code" in error.data &&
+		"message" in error.data
+	)
+}
+
+export function create(code: Code, message: string = "unknown error") {
+	return new ConvexError({
+		code,
+		message,
+	})
+}