[Task] Add support links in the help command

What should be done

To make it simple for the CLI users to get help, add at the end of the help command the links to our community support platform:

• The documentation: https://docs.lenra.io/
• The GitHub: https://github.com/lenra-io
• Our Discord: https://discord.com/channels/702539350277357669/1005103677306056765

Example:

You can't find the help you need ? Get more information on our documentation website (https://docs.lenra.io/), on our GitHub (https://github.com/lenra-io) or contact us on Discord (https://discord.com/channels/702539350277357669/1005103677306056765).