Add Appium report screenshots

[shamanec]

• Update Appium plugin to trigger screenshots on provider for specific actions and events
• Add MinIO as storage solution for the reports screenshots - introduce the needed DB code for the MinIO configuration, add the respective MinIO client instance for storing the screenshots
• Add global hub config instance instead of passing an object around
• Handle taking screenshots triggered by the Appium plugin in the provider and storing them in MinIO

Note For iOS the latest WebDriverAgent from the fork is required because it has a custom screenshot endpoint