Fixes #618 Support debug and release builds on device simultaneously

[keianhzo]

Fixes #618 Added support for simultaneous debug and release builds int he same device.

[MortimerGoro]

Thanks for doing this!

One question, why do we need to duplicate the logos?

[bluemarvin]

Will this work correctly on Oculus? I assume when we install the debug version you will have to launch it from adb as the debug version won't be visible in the launcher?

[cvan]

One question, why do we need to duplicate the logos?

to easily differentiate between release and debug versions, if I had to guess.

I was going to create a version with a Debug ribbon on the edge:

but the grayscale version's good IMO 👍

[keianhzo]

@MortimerGoro I change the logo just so it's more obvious that it's a debug build but that can be removed or changed for any other logo.

@rbarker it does work ok Oculus, just the store app will show in the apps shelf and the debug app will show in the unknown sources list. I couldn't find a way for the debug build to show in the apps shelf.

[bluemarvin]

I would prefer this be a user.properties option and not the default behavior at least for oculus but really for all platforms. Having two different FxR on a head set really complicates testing and development scripts.

[MortimerGoro]

+1 for the user.properties option.

I updated this PR with a new user property to enable the simultaneous builds

[MortimerGoro]

Merging this. The dev sufix is only enabled via user.properties now so it will be harmless for tascluster