Feature/export import stage 2 (#3063)

* add export all function

* modify exportAll to reuse existing code from other services

* modify routes of export-import

* add exportAll function into UI

* add errorhandler

* add importAll Function into UI for ChatFlow

* modify importAll Function to import tools

* remove appServer variable

* modify exportAll to exportData for new requirement in backend

* chore modify type camelCase to PascalCase in exportImportService

* add import export for variables, assistants, and checkboxes for UI

---------

Co-authored-by: Henry <hzj94@hotmail.com>

packages/ui/src/utils/errorHandler.js

@@ -0,0 +1,19 @@
+const isErrorWithMessage = (error) => {
+    return typeof error === 'object' && error !== null && 'message' in error && typeof error.message === 'string'
+}
+
+const toErrorWithMessage = (maybeError) => {
+    if (isErrorWithMessage(maybeError)) return maybeError
+
+    try {
+        return new Error(JSON.stringify(maybeError))
+    } catch {
+        // fallback in case there's an error stringifying the maybeError
+        // like with circular references for example.
+        return new Error(String(maybeError))
+    }
+}
+
+export const getErrorMessage = (error) => {
+    return toErrorWithMessage(error).message
+}