Register capabilities grid

- Consider emulator when matching capabilities
- For each device, register as "android" for WebView tests and also selendroid if an aut is specified
Grid Registration will look something like this
{
            "emulator": "true",
            "aut": "io.selendroid.testapp:0.12.0",
            "screenSize": "(1080, 1920)",
            "platformVersion": "19",
            "browserName": "selendroid",
            "maxInstances": 1,
            "version": "19",
            "platform": "ANDROID"
        },
        {
            "emulator": "true",
            "screenSize": "(1080, 1920)",
            "platformVersion": "19",
            "browserName": "android",
            "maxInstances": 1,
            "version": "19",
            "platform": "ANDROID"
        }