OutputCaching make IOutputCacheKeyProvider public

Hello,

I've been playing around with using the new OutputCaching middleware that was introduced in dotnet 7 preview 6 and I have a requirement to implement my own cache key provider.

Basically I would like to ignore the host header in the incoming request but I also conceive a scenario where I would like to do only path based keys.

I'm currently working around this by using middleware to set the host header to null before it goes to the endpoint that's being cached.

If IOutputCacheKeyProvider was public and injected in AddOutputCache() the same way as IOutputCacheStore then I could simply inject my own implementation before calling AddOutputCache().

Thanks,
Nick