[ACNA-1367] A clear error message when executing aio app commands outside of the application root

[florind-ens]

Pick up error returned from executing commands outside an aio project and return an explicit error in exchange.

Description

⚠️ Pre-requisite ⚠️

adobe/aio-cli-lib-app-config#5 release

Related Issue

Fixes #488

Motivation and Context

How Has This Been Tested?

By executing aio app commands.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #494 (31f866d) into master (097a342) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #494   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           43        43           
  Lines         2267      2267           
  Branches       372       372           
=========================================
  Hits          2267      2267           

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