Mark hidden commands in build-cli-definition tool

[andrew-farries]

Make the build-cli-definition tool not include hidden commands in the generated CLI definition JSON file.

Hidden commands are either internal (like anaylze) or work in progress (like baseline) and shouldn't be included in the generated CLI definition.

Updated based on #847 (review).

Make the build-cli-definition tool mark hidden commands in the generated JSON output.

[divyenduz]

LGTM. My preferred solution will be to add a hidden: true column though instead of removing. Having baseline structure before it is available will help with early integration.

[andrew-farries]

LGTM. My preferred solution will be to add a hidden: true column though instead of removing. Having baseline structure before it is available will help with early integration.

Let's do it that way then 👍