Export startHardwareBackButton() for debugging purposes

[ptitjes]

Feature Request

Ionic Info

Ionic:

   ionic (Ionic CLI)          : 4.1.1 (/opt/npm/lib/node_modules/ionic)
   Ionic Framework            : @ionic/angular 4.0.0-beta.9
   @angular-devkit/core       : 0.8.1
   @angular-devkit/schematics : 0.8.1
   @angular/cli               : 6.2.1
   @ionic/ng-toolkit          : 1.0.8
   @ionic/schematics-angular  : 1.0.6

Capacitor:

   capacitor (Capacitor CLI) : 1.0.0-beta.7
   @capacitor/core           : 1.0.0-beta.7

System:

   NodeJS : v8.9.1 (/usr/local/bin/node)
   npm    : 6.4.1
   OS     : Linux 4.18

Describe the Feature Request
It would be practical to be able to test the hardware back button in development setup on the desktop.

Describe Preferred Solution
I would like for the startHardwareBackButton() function of @ionic/core to be exported.
We can then test backbutton events from the DevTools console by using window.document.dispatchEvent(new Event('backbutton')).

Describe Alternatives
None.

Related Code
None.

Additional Context
None.

[ionitron-bot]

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