Make static command data part of a plugin.json file

[EricRabil]

By outsourcing the following properties:

• supportedEnvironments
• globalAdminOnly
• description
• permission
• arguments

to a plugin.json file, we can eliminate the need for a standard plugin.ts name and location. This will allow for folder structures such as

• myplugin/src
• myplugin/dist
  and within the plugin.json, have a entry property similar to package.json.

[EricRabil]

I just realized I meant to merge command data and plugin data into one oof