Let's add a cheetseet reference for better use of the backend.ai.

[mindgitrwx]

Is your feature request related to a problem? Please describe. Googling 'cheat seat' is a basic routine for many programmers who use a new command-line tool for the first time. But backend.ai doesn't have any cheat-seat like pages or images.

Describe the solution you'd like Adding cheat seat pages or images on docs.

Additional context

Check out the links below. gcloud cheatseet GCP cheatseet Kubernetes cheatseet

A cheatseet image example.