Release v2.0 (#8)

* added new proto file and mapped the data

* fix ubuntu 20 build

* changed protofile name and removed GpsdReduced message and implementation

* updated protofile with altHAE,altMSL and set filds

* fixed set mask

* fix ubuntu focal  build

Co-authored-by: Dumitruc Oana (uic75667) <uic75667@iavj288u.conti.de>

Update README.md (#7)