datapath-windows: Kernel module for HyperV.

The kernel switch extension has support for bridged back forwarding & tunneling
over VXLAN. There is no Netlink integration as it is still being worked out.

Co-Authored-By: Ankur Sharma <ankursharma@vmware.com>
Signed-off-by: Ankur Sharma <ankursharma@vmware.com>
Co-Authored-By: Eitan Eliahu <eliahue@vmware.com>
Signed-off-by: Eitan Eliahu <eliahue@vmware.com>
Co-Authored-By: Guolin Yang <gyang@vmware.com>
Signed-off-by: Guolin Yang <gyang@vmware.com>
Co-Authored-By: Linda Sun <lsun@vmware.com>
Signed-off-by: Linda Sun <lsun@vmware.com>
Co-Authored-By: Nithin Raju <nithin@vmware.com>
Signed-off-by: Nithin Raju <nithin@vmware.com>
Signed-off-by: Saurabh Shah <ssaurabh@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>