Add choose input method action

[vuduc810]

Can you please add choose input method action, I use english, vietnamese and japanese keyboard, my phone doesn't have a shorcut button to quickly change between those keyboards so when I want to change my keyboard to type in japanese, I have to scroll down the notification bar or press and hold the space bar on the keyboard, which can be tiresome. FNG does have that action but strangely it only works when I'm in the app.