Add OWNERS to enable tidy and chatops merging (#10)

Enables merging PRs without elevated privileges on the repository.

Signed-off-by: Pierangelo Di Pilato <pierdipi@redhat.com>

Author: pierDipi

OWNERS

@@ -0,0 +1,18 @@
+approvers:
+- acardace
+- aneeshkp
+- anishasthana
+- dagrayvid
+- evacchi
+- Gregory-Pereira
+- kwozyman
+- nainaz
+- pierdipi
+- RishabhSaini
+- zdtsw
+options: {}
+reviewers:
+- aneeshkp
+- kwozyman
+- pierdipi
+- zdtsw