Flags do not support multiselect

[henriquemoraeszup]

What happened:
When adding a multiselect input, it is not read on the --help flag and the user cannot use it as argument

What you expected to happen:
After adding a multiselect input on config.json the formula should support that input

How to reproduce it (as minimally and precisely as possible):
Add a multiselect block and call --help on that formula

Anything else we need to know?:

Environment:

• Ritchie version (use rit --version):
• Operating System:
• Network plugin / Tool and version (if this is a network-related / tool bug):
• Others: