Move Doctor to a separate plugin/package

[grabbou]

Right now, Doctor command and its tools are populating the core of the CLI, making it larger and more complex to maintain.

With future improvements in mind and additional automatic resolves, I recommend we move it to a separate package, just like iOS/Android files.

As a result, it would look as follows in the repo structure:

/
  packages/
    cli/
    ...
    cli-doctor/ # <-- moved here

[Ali-Aftab]

Hey @grabbou @thymikee can I take this issue?

[thymikee]

Yes please

[nickx720]

@thymikee Hi, I wasn't sure if this ticket was still being worked on, so I went ahead and made the changes. I am a newbie so I hope I got it right. Thanks in advance :).

[mikehardy]

Hey @thymikee 👋 - I was looking at upstreaming some of my personal doctor scripting so I was browsing here (source code, open issues etc) related to doctor. Looks like this one is closeable! PR #1480 didn't include the Fixes #1047 annotation so it didn't autoclose