Create EMERITUS.md to recognize old maintainers

Previous maintainers should be thanked for their work.

Signed-off-by: Chris Aniszczyk <[email protected]>
Signed-off-by: Vincent Batts <[email protected]>

Author: caniszczyk

EMERITUS.md

@@ -0,0 +1,7 @@
+We would like to acknowledge previous OCI image spec maintainers and their huge contributions to our collective success:
+
+* Brandon Philips (@philips)
+* Jason Bouzane (@jbouzane)
+* Keyang Xie (@xiekeyang)
+
+We thank these members for their service to the OCI community.