Alex's right turn fix, improved image handling and miniscreen non-exclusive mode (v0.16.0)

This release continues to extend support for content on Further. Changes include improvements to conversion between different image formats, using environment variables on Miniscreen to control non-exclusive mode, and also small changes to docs: renaming one of the main sections and the addition of a new example. Also, includes a fix to the method that performs right turns when using the Robotics Kit’s Alex configuration.
The SDK and its related CI workflows are still in active development and subject to breaking changes.
However, this release is regarded as "fairly stable" and the SDK itself should work in most of the detailed use-cases.