Add @microsoft/api-extractor.json file to JSONC (#5374)
Add @microsoft/api-extractor.json file to JSONC (#5374)

The generated file is heavily annotated with comments.

Template: https://github.com/microsoft/rushstack/blob/master/apps/api-extractor/src/schemas/api-extractor-template.json

This template is used during the running of `api-extractor init`.

Co-authored-by: Colin Seymour <342564bc1ab1e55103f85104b5e013adfdf828cb@github.com>
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