Add manpages when possible

[nervo]

• Using help2manjust like hugo package
• Find a clean way to avoid manpage-has-useless-whatis-entrylinting warnings
• ngrok output some warnings WARN[10-04|15:08:19] failed to get home directory, using $HOME instead err="user: Current not implemented on linux/amd64" $HOME=/home/manalawith all commands (including versionand help) making help2man unable to work