Xeigu G90 WSJTX support

Following a busy working week now looking at adding the Xeigu G90 support to WSJTX, this should be quite simple to do, were going to use the a branch of the integration branch to aid compiling with WSJTX codebase. This will be released via git hub to enable you to compile and build the native support.  One issue we may encounter is the lack of a tube facility with the rig that currently does not work via cat cmds.