feat: add setup-compiler-macros environment

[foxxyz]

Adds a setup-compiler-macros environment which allows users to enable the globals used in <script setup> and prevent no-undef warnings per #1662.

Use via:

module.exports = {
  env: {
    'vue/setup-compiler-macros': true
  }
}

Modifies docs to illustrate correct usage.

Let me know if this is an acceptable approach, and if you'd like me to make additional changes!

Closes #1662

[ota-meshi]

Thank you for this PR!
I made one comment.

[ota-meshi]

LGTM! Thank you very much!