Configure Allowed Headers as Array of RegExp

[ramytamer]

I am working on rewriting a web application written in a different language/framework in Node, and I want to replicate the same CORS behavior we had before.

The old behavior was configured via an array of regex patterns, for example:

allowedHeaders = [
  "^apollo-",
  "^x-apollo-",
  "^x-custom-app-header-",
  "Accept",
  "Content-Type",
  ...
]

Do we plan to support such a thing in this package? Or, if the maintainers are open to that, I can open a PR for this functionality.