add get_firmware_version command to ganglion boards (#686) #944

Job	Run time
CppUnix (Release, ubuntu-latest)	7m 8s
CppWindows (static, Release, Win32)	4m 24s
CppUnix (Release, macos-11.0)	7m 38s
CppWindows (static, Release, x64)	4m 34s
CppUnix (Debug, ubuntu-latest)	8m 20s
CppWindows (static, Debug, Win32)	3m 45s
CppUnix (Debug, macos-11.0)	5m 30s
CppWindows (static, Debug, x64)	3m 51s
CppWindows (dynamic, Release, Win32)	4m 32s
CppWindows (dynamic, Release, x64)	4m 25s
CppWindows (dynamic, Debug, Win32)	3m 25s
CppWindows (dynamic, Debug, x64)	3m 56s
	1h 1m 28s

Provide feedback