Added code to separate features and the feature header.
* DiscImageChef.Devices/Enums.cs:
* DiscImageChef.Devices/Device/ScsiCommands.cs:
Added SCSI GET CONFIGURATION
Polished some bugs and typos and format
* DiscImageChef.Devices/Device/ScsiCommands.cs:
Corrected math typo.
* DiscImageChef/Commands/DeviceInfo.cs:
Added MODE SENSE to device information.
* DiscImageChef/Options.cs:
* DiscImageChef/DiscImageChef.csproj:
* DiscImageChef/Commands/DeviceInfo.cs:
Added "device-info" command.
* DiscImageChef.Decoders/SCSI.cs:
Correct size miscalculation.
Do not print "Device claims no standard", generates too much
noise.
* DiscImageChef.Devices/Device/Constructor.cs:
Add OS error detection and handling.
On Linux move to opening O_RDONLY and O_NONBLOCK to allow
opening read-only media and removable drives without media.
* DiscImageChef.Devices/Device/Variables.cs:
* DiscImageChef.Devices/Device/ScsiCommands.cs:
Add OS error detection and handling.
* DiscImageChef.Devices/DiscImageChef.Devices.csproj:
* DiscImageChef.Interop/DiscImageChef.Interop.csproj:
Downgraded .NET version.