add network settings in reader menu

and remove the wifi toggler on the footer of each menu page,
so that network status is only checked (currently with the stdout of ip cmd)
when navigating to the "Network settings" submenu instead of checking
on each menu popup.

frontend/apps/reader/modules/readermenu.lua

@@ -4,6 +4,7 @@ local InfoMessage = require("ui/widget/infomessage")
 local InputDialog = require("ui/widget/inputdialog")
 local ConfirmBox = require("ui/widget/confirmbox")
 local GestureRange = require("ui/gesturerange")
+local NetworkMgr = require("ui/networkmgr")
 local OTAManager = require("ui/otamanager")
 local UIManager = require("ui/uimanager")
 local Device = require("device")
@@ -98,6 +99,13 @@ function ReaderMenu:setUpdateItemTable()
             UIManager:getRefreshMenuTable(),
         },
     })
+    table.insert(self.tab_item_table.setting, {
+        text = _("Network settings"),
+        sub_item_table = {
+            NetworkMgr:getWifiMenuTable(),
+            NetworkMgr:getProxyMenuTable(),
+        }
+    })
     table.insert(self.tab_item_table.setting, {
         text = _("Night mode"),
         checked_func = function() return G_reader_settings:readSetting("night_mode") end,