refactor: move convex into packages

packages/convex/model/error.ts

@@ -0,0 +1,22 @@
+import { ConvexError } from "convex/values"
+
+export enum Code {
+	DirectoryExists = "DirectoryExists",
+	DirectoryNotFound = "DirectoryNotFound",
+	FileExists = "FileExists",
+	Internal = "Internal",
+	Unauthenticated = "Unauthenticated",
+}
+
+export type ApplicationError = ConvexError<{ code: Code; message: string }>
+
+export function isApplicationError(error: unknown): error is ApplicationError {
+	return error instanceof ConvexError && "code" in error.data
+}
+
+export function create(code: Code, message?: string) {
+	return new ConvexError({
+		code,
+		message,
+	})
+}