Adds initial manpages for ctr, containerd, and containerd config
commands, as well as the config.toml configuration file.
Adds targets to Makefile for generating and installing manpages.
Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
Adds capability to build the manpages via the go-md2man utility to the
make framework for containerd
Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>