docs: add menu bar and optimize navigation

lib/config-context.ts

@@ -1,4 +1,5 @@
 import React from 'react'
+import { Sides } from 'lib/components/sidebar/side-item'
 
 export interface Configs {
   onChange?: Function
@@ -6,12 +7,24 @@ export interface Configs {
   updateChineseState: Function
   sidebarScrollHeight: number
   updateSidebarScrollHeight: Function
+  
+  sides: Sides[]
+  updateSides: Function
+  
+  tabbarFixed: boolean
+  updateTabbarFixed: Function
 }
 
 export const defaultConfigs: Configs = {
   sidebarScrollHeight: 0,
   updateSidebarScrollHeight: () => {},
   updateChineseState: () => {},
+
+  sides: [],
+  updateSides: () => {},
+  
+  tabbarFixed: false,
+  updateTabbarFixed: () => {},
 }
 
 export const ConfigContext = React.createContext<Configs>(defaultConfigs)