fix(camera): set direction on web

[Leo1305Pineda]

Is require PR to this from PR #93
Resolved open rear camera from initial opening.

[Aarbel]

@Leo1305Pineda can you write tests with your PR ?

Web RTC Camera is quite unstable on many environments, that would be great to not break it at every code update.

[Aarbel]

@Leo1305Pineda do you plan to update your PR ?

[Leo1305Pineda]

I have a build of this and it works fine for web, ios, and android.

[Aarbel]

@Leo1305Pineda sure, we all have our custom fixes of web rtc camera, but would be really great to write a few tests to make it open-source friendly ;)

[Leo1305Pineda]

This PR is also required pwa-elements/pull/93)

[Aarbel]

@Leo1305Pineda have you tested it on a Microsoft Surface device?

The devices API isn't standard (browser of Microsoft surface doesn't provide all the necessary metadata of devices).
So it may affect a lot of users if it doesn't work

[Leo1305Pineda]

In pwa-elements there was no entry @prop () facesMode: FacingMode;
this was already applied in this PR pwa-elements/pull/93

[Aarbel]

@Leo1305Pineda thanks a lot, don't hesitate to make a quick test anyway with Microsoft Surface, facingMode doesn't work well with these devices.

[jcesarmobile]

Thanks for the pull request!