Add Editorconfig file from microprofile-config.
Add Editorconfig file from microprofile-config.

Signed-off-by: Heiko W. Rupp <b84916873c63a5de92f08628798bc3f70d9f6496@redhat.com>

raymondlam/microprofile-metrics,raymondlam/microprofile-metrics,Arjun-Sharma1/microprofile-metrics,Arjun-Sharma1/microprofile-metrics,pilhuhn/microprofile-metrics,Channyboy/microprofile-metrics,pilhuhn/microprofile-metrics,Channyboy/microprofile-metrics