App Center upload and schedule tests

⚠️   App Center is deprecated. We recommend to use [Bitrise Release Management](https://docs.bitrise.io/en/release-management.html) and [Bitrise CodePush](https://docs.bitrise.io/en/release-management/codepush/about-codepush.html).

This step uploads and schedules tests on Microsoft App Center.

Appium, Espresso, Calabash Xamarin.UITest and XCUITest tests can be uploaded.

Setup instructions:

1. Prepare your test for upload: https://docs.microsoft.com/en-us/appcenter/test-cloud/preparing-for-upload/
2. Create an App Center project: https://appcenter.ms/apps
3. Navigate to Test runs tab and start a New test run:

• Select devices
• Configure test run
• On the Submit tab, you will find every required input for the step
• Click Done