Add workflow metadata command

[Sushisource]

What was changed

• Added new workflow metadata command to run the built-in metadata query and show results

Not-JSON looks like this:

Metadata:
              WorkflowType       DevWorkflow
              QueryDefinitions   [{"name":"__open_sessions","description":"Open sessions on the workflow"}, {"name":"__stack_trace","description":"Current stack trace"}, {"name":"__temporal_workflow_metadata","description":"Metadata about the workflow"}, {"name":"my-query","description":"q-desc"}]
              SignalDefinitions  [{"name":"my-signal","description":"sig-desc"}]
              UpdateDefinitions  [{"name":"my-update","description":"upd-desc"}]
              CurrentDetails     current-deets

Which is debatable since it's sorta half-JSON. I dunno if we want to recursively headerize this or not

Why?

Useful to run this from the CLI

Checklist

1. Closes

2. How was this tested:
   Added tests

3. Any docs updates needed?

[cretz]

I'd be ok if we didn't even accept query reject condition, but meh

[dandavison]

I dunno if we want to recursively headerize this or not

I think that would make sense and be what most users would expect. At least, having one line per handler

[Sushisource]

Looks like this now:

         Metadata:
          Query Definitions:
            __open_sessions                 Open sessions on the workflow
            __stack_trace                   Current stack trace          
            __temporal_workflow_metadata    Metadata about the workflow  
            my-query                        q-desc                       
          Signal Definitions:
            my-signal    sig-desc   
          Update Definitions:
            my-update    upd-desc   
          Current Details:
            current-deets

[dandavison]

Looks like this now:

WDYT about the alignment -- would be nice to have the descriptions aligned, or perhaps just don't indent them at all if we're not going to enforce an alignment that works for all rows.