Allow $schema in your JSON schema itself

[rklec]

I tried editing the conventionalcommit.json you can export for tokens in Visual Studio Code (VSCode).

It has autocomplete, when you add

{
  "$schema": "https://github.com/lppedd/idea-conventional-commit/raw/master/src/main/resources/defaults/conventionalcommit.schema.json",

...at the beginning. However, this itself causes a schema validation error:

So maybe:

• add this by default to have autocomplete (in all IDEs)
• allow the $schema itself in your schema