More descriptive error message when creating/deploying another users app

[macdonst]

When you run the command:

begin create
# or
begin deploy 

When your .arc file has an appID but you do not have permission to access it. When you run create it just returns with no message. Running deploy just says Error: unknown_error.

Expected behaviour

A more descriptive error message should be displayed to give users a hint as to what has gone wrong.

Steps to reproduce

• Deploy and app with user A
• Login as user B
• Attempt to create or deploy the app as user B with an appID from user A

Platform version

• MacOS 14.2.1
• Begin version: main-21f0079
• Node.js v18.15.0