Proposal: New Command: `dtm develop validate-plugin --name=xxx`

## Description

We have `dtm develop create-plugin --name=xxx` to scaffold a new plugin.

So when someone submits a PR for a new plugin, how do we know that the plugin conforms to our scaffolding specification? 

So I want to add a command to help us with this check.

E.g. `dtm develop validate-plugin --name=xxx`

@devstream-io/devstream Who is interested?