Handle invalid command

[SeriyBg]

If unsupported commands is received should return status "Error" with message "Unsupported command" and print the list of supported commands

[SeriyBg]

Here are the list of supported commands:

• create --name [name] --desc [description]
• delete --name
• show --all

[SeriyBg]

HINT how to implement: when you receive the input command, split this string by space and read the first element(word) as command