"Inspect" CLI commands should support JSON output

[abrookins]

First check

• [X] I added a descriptive title to this issue.
• [X] I used the GitHub search to find a similar request and didn't find it.
• [X] I searched the Prefect documentation for this feature.

Prefect Version

2.x

Describe the current behavior

Running a command like prefect work-pool inspect <name> always outputs object representations in Python objects.

Describe the proposed behavior

Running a command like prefect work-pool inspect <name> should support a flag to output the result in JSON.

Example Use

prefect work-pool inspect <name> --output=json prefect work-pool inspect <name> -o json

Additional context

There are times when it can be useful to save JSON representations to use as subsequent input to commands that expect JSON, such as prefect work-pool update <name> --base-job-template <file.json>.

[serinamarie]

Makes sense to me. I can implement a POC with the work I'm currently building in the global concurrency limit CLI.

[serinamarie]

Unassigned myself for now as this a variety of PRs may help close this issue.

[serinamarie]

The POC has been created in the above PR, so anyone can contribute easily to this!

[olanna12]

Hi @abrookins! I would like to be assigned this issue.