Add compression middleware

[toshinari123]

https://pkg.go.dev/github.com/andybalholm/brotli#HTTPCompressor

[kiootic]

Can you help add an Unwrap function to the compressed response writer, so that ResponseController can obtain the underlying writer?

ref: https://pkg.go.dev/net/http#NewResponseController

[kiootic]

The middleware is not applied, please add to the list of default middleware.

[kiootic]

Please try use this instead: https://github.com/go-chi/chi/blob/master/middleware/compress.go

Also, format the source code using go fmt.

[kiootic]

Please also test for the response body; it should be decompressed correctly to the original content.

[kiootic]

Merged via 39f6423.