default output should show command descriptions

[rizen]

Describe the feature

The descriptions of each command should be shown next to their label. So instead of this:

ving v1.0.0
ving CLI

USAGE: ving cache|drizzle|record|schema|user

COMMANDS:

    cache    
  drizzle    
   record    
   schema    
     user    

Use `ving <command> --help` for more information about a command.

You'd get this:

ving v1.0.0
ving CLI

USAGE: ving cache|drizzle|record|schema|user

COMMANDS:

    cache    Redis cache entries
  drizzle    Drizzle ORM code generation and migrations
   record    Ving Record code generation
   schema    Ving Schema code generation
     user    Manage users

Use `ving <command> --help` for more information about a command.

Additional information

• Would you be willing to help implement this feature?

[rizen]

Or if you're thinking people will write long descriptions, we could just put the "name" field there.