Remove support for sunsetted Awair devices

• [Functionality] Remove support for Awair v1, Glow and Glow-C which are 'sunsetted' by Awair as of 30 Nov 2022. With this change, Awair removed iOS app and Awair Cloud support for these devices which is required by the plug-in.
• [Housekeeping] Update README.md and Wiki for iOS 16 and removal of 'sunsetted' devices.
• [Housekeeping] Add check to confirm that Developer Token is valid JSON Web Token (JWT) as condition to starting plugin.
• [Housekeeping] Bump axios from 0.27.2 to 1.1.3.