[FEATURE] A Switch to set "silent mode" as Default Mode

[koenzhao]

Hi Dongyu,

You can swith to the default English input mode(the normal||quiet||silent mode) by pressing the shift key. Pressing shift again, it will switch to the auto-suggestion mode.

I know I can use "shift" key to enter silent mode, but when I switch to another input window/box, I need to press "shift" key again for silent mode. Can I set silent mode as default mode? And I prefer to enter auto-suggestion mode when I need it.
I think for better inclusiveness, some ppl use "silent mode" more frequently, while some use "auto-suggestion mode" more frequently, it would be better to be a setting switch in Preference for this.

Thanks!