Add app list command

[bgins]

Summary

Problem

There is currently no way to check what app you already have created.

Impact

If a user forgot the name of the app that they created or just want want to delete some old apps that they created and no longer want, there is no way to solve this issue.

Solution

This is currently already implemented server side so it should be a matter of creating a command that queries the server for a list of apps.

Details

This feature is to be added during the Cli rewrite in Rust.