Scrub and hide the diff-scan command

[pvdz]

Updates the diff-scan command;

• Fix the endpoint being fetched
• Hide the command
  • In its current form it's not likely to be very useful to users. Additionally, the command was broken up to this point because it was trying to reach an endpoint that didn't exist. We'll probably want to expose this again once we solve the UX around it, and even then, probably under the scan command.
• Support a --depth flag to control how deep a JSON structure it can print
• Fixup the --json and `--file flags
• Support a - value for --file to explicitly dump the raw JSON to stdout
  • This way you can pipe the json to another command like socket diff-scan get | jq
• Removed the flag for --markdown, I'm not sure it makes sense for this command. Or maybe it does but it would emit a high overview sort of report instead. Either way, that would need some more thinking and work to implement so it's gone for now.
• Removed the --preview flag.
  • There's no such option at all, according to https://docs.socket.dev/reference/getorgdiffscan

Add small state notification to the dependencies view.
Add shortcut commands to package.json to ease development.