Add --json flag to get command

[amolina-adobe]

Note

This is a follow up to PR #61. A few minor revisions were required in addition to merging the now up-to-date develop branch. This PR should be merged in it's stead.

Description

Adds a --json flag to the api-mesh:get command.
This gets rid of the selected org, project, and workspace logs, and a prefix log before the json output.

Existing output and strings are unchanged for backwards compatibility.

How Has This Been Tested?

• aio plugins link . in this PR branch
• aio api-mesh:get
• aio api-mesh:get --json

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 (this should auto update when you publish via npm pack)
• 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.