Make --version switch universal so help2man will work properly

[jsherwood0]

Ensure that the --version switch is available in all modes so that help2man processing will function properly.

• Moves the --version switch into generic_parser
• Adds --version to the conditions that will suppress the requirement for target positional argument

Motivation: The netexec package (on Kali in this case) does not include man pages. The existence of man pages is required to enable the use of the apropos command. The apropos command is used when a user is trying to think of what command they need for what they are trying to do. For example:

# apropos smb brute force
brutespray (8)       - Python bruteforce tool
netexec (1)          - The network execution tool
patator (1)          - multi-purpose brute-forcer
smbmap (1)           - SMB enumeration tool

# apropos wmi query
netexec (1)          - The network execution tool

To ensure that users are more easily able to find and adopt netexec, the project should include man pages even if the --help pages are exhaustive. To minimize the overhead of generating man pages, the tool help2man can be used to convert the various already existing --help pages into actual man pages. The help2man tool works best when each program section (i.e., netexec, netexec ftp, netexec ldap, etc.) accepts both --help and --version. This change puts the --version switch into the universal "Generic" argument group and ensures that the target positional argument is not required when the --version switch is used.

[NeffIsBack]

Understood and LGTM 👍