✨ feat: Agent Panel UI Enhancements (#7800)

* feat: add MCP Panel to Agent Builder

- Add MCP server panel and configuration UI
- Implement MCP input forms and tool lists
- Add MCP icon and metadata support
- Integrate MCP with agent configuration
- Add localization support for MCP features
- Refactor components for better reusability
- Update types and add MCP-related mutations
- Fix small issues with Actions and AgentSelect
- Refactor AgentPanelSwitch and related components to use new
  AgentPanelContext to reduce prop drilling

* chore: import order

* chore: clean up import statements and unused var in ActionsPanel component

* refactor: AgentPanelContext with actions query, remove unnecessary `actions` state

- Added actions query using `useGetActionsQuery` to fetch actions based on the current agent ID.
- Removed now unused `setActions` state and related logic from `AgentPanelContext` and `AgentPanelSwitch` components.
- Updated `AgentPanelContextType` to reflect the removal of `setActions`.

* chore: re-order import statements in AgentConfig component

* chore: re-order import statements in ModelPanel component

* chore: update ModelPanel props to consolidated props to avoid passing unnecessary props

* chore: update import statements in Providers index file to include ToastProvider and AgentPanelContext exports

* chore: clean up import statements in VersionPanel component

* refactor: streamline AgentConfig and AgentPanel components

- Consolidated props in AgentConfig to only include necessary fields.
- Updated AgentPanel to remove unused state and props, enhancing clarity and maintainability.
- Reorganized import statements for better structure and readability.

* refactor: replace default agent form values with utility function

- Updated AgentsProvider, AgentPanel, AgentSelect, and DeleteButton components to use getDefaultAgentFormValues utility function instead of directly importing defaultAgentFormValues.
- Enhanced the initialization of agent forms by incorporating localStorage values for model and provider in the new utility function.

* chore: comment out rendering MCPSection

---------

Co-authored-by: Dustin Healy <54083382+dustinhealy@users.noreply.github.com>

client/src/components/SidePanel/Builder/MCPAuth.tsx

@@ -0,0 +1,55 @@
+import { useEffect } from 'react';
+import { FormProvider, useForm } from 'react-hook-form';
+import ActionsAuth from '~/components/SidePanel/Builder/ActionsAuth';
+import {
+  AuthorizationTypeEnum,
+  TokenExchangeMethodEnum,
+  AuthTypeEnum,
+} from 'librechat-data-provider';
+
+export default function MCPAuth() {
+  // Create a separate form for auth
+  const authMethods = useForm({
+    defaultValues: {
+      /* General */
+      type: AuthTypeEnum.None,
+      saved_auth_fields: false,
+      /* API key */
+      api_key: '',
+      authorization_type: AuthorizationTypeEnum.Basic,
+      custom_auth_header: '',
+      /* OAuth */
+      oauth_client_id: '',
+      oauth_client_secret: '',
+      authorization_url: '',
+      client_url: '',
+      scope: '',
+      token_exchange_method: TokenExchangeMethodEnum.DefaultPost,
+    },
+  });
+
+  const { watch, setValue } = authMethods;
+  const type = watch('type');
+
+  // Sync form state when auth type changes
+  useEffect(() => {
+    if (type === 'none') {
+      // Reset auth fields when type is none
+      setValue('api_key', '');
+      setValue('authorization_type', AuthorizationTypeEnum.Basic);
+      setValue('custom_auth_header', '');
+      setValue('oauth_client_id', '');
+      setValue('oauth_client_secret', '');
+      setValue('authorization_url', '');
+      setValue('client_url', '');
+      setValue('scope', '');
+      setValue('token_exchange_method', TokenExchangeMethodEnum.DefaultPost);
+    }
+  }, [type, setValue]);
+
+  return (
+    <FormProvider {...authMethods}>
+      <ActionsAuth />
+    </FormProvider>
+  );
+}