Bugfix release for the ubuntu noble

The default gcc compiler now distinguishes between std::string and the old cstring so both need to be included. This release now compiles under Ubuntu Noble (LTS).

Attys 2 release: 500Hz sampling rate

This release now supports also 500Hz sampling rate of the Attys which transmits two samples per packet instead of the magnetometer data so that 500Hz are reliably possible. The Attys which are able to run at 500Hz are called Attys2.

Improved re-connect performance on Mac

In case of a broken connection the attys now recovers reliably on a mac.