feat: update ESLint config with @typescript-eslint/consistent-type-imports (#4746)

* update: Add type

* fix: update import statement for NextApiRequest type

* fix: update imports to use type for LexicalEditor and EditorState

* Refactor imports to use 'import type' for type-only imports across multiple files

- Updated imports in various components and API files to use 'import type' for better clarity and to optimize TypeScript's type checking.
- Ensured consistent usage of type imports in files related to chat, dataset, workflow, and user management.
- Improved code readability and maintainability by distinguishing between value and type imports.

* refactor: remove old ESLint configuration and add new rules

- Deleted the old ESLint configuration file from the app project.
- Added a new ESLint configuration file with updated rules and settings.
- Changed imports to use type-only imports in various files for better clarity and performance.
- Updated TypeScript configuration to remove unnecessary options.
- Added an ESLint ignore file to exclude build and dependency directories from linting.

* fix: update imports to use 'import type' for type-only imports in schema files

packages/web/components/common/Textarea/PromptEditor/plugins/VariablePickerPlugin/index.tsx

@@ -1,6 +1,7 @@
 import { useLexicalComposerContext } from '@lexical/react/LexicalComposerContext';
 import { LexicalTypeaheadMenuPlugin } from '@lexical/react/LexicalTypeaheadMenuPlugin';
-import { $createTextNode, $getSelection, $isRangeSelection, TextNode } from 'lexical';
+import type { TextNode } from 'lexical';
+import { $createTextNode, $getSelection, $isRangeSelection } from 'lexical';
 import * as React from 'react';
 import { useCallback, useState } from 'react';
 import * as ReactDOM from 'react-dom';
@@ -8,7 +9,7 @@ import { useTranslation } from 'next-i18next';
 import MyIcon from '../../../../Icon';
 import { Box, Flex } from '@chakra-ui/react';
 import { useBasicTypeaheadTriggerMatch } from '../../utils';
-import { EditorVariablePickerType } from '../../type.d';
+import { type EditorVariablePickerType } from '../../type.d';
 
 export default function VariablePickerPlugin({
   variables