chore: add CODEOWNERS (#76)

Signed-off-by: Niladri Halder <niladri.halder26@gmail.com>

Author: niladrih

.github/CODEOWNERS

@@ -0,0 +1,14 @@
+# Default code owners
+*                           @openebs/mayastor-approvers
+
+# CODEOWNERS file owners
+/.github/CODEOWNERS         @openebs/org-maintainers
+
+# Policy docs owners
+/CODE_OF_CONDUCT.md         @openebs/org-maintainers
+/CONTRIBUTING.md            @openebs/org-maintainers
+/GOVERNANCE.md              @openebs/org-maintainers
+/LICENSE                    @openebs/org-maintainers
+/MAINTAINERS.md             @openebs/org-maintainers
+/SECURITY.md                @openebs/org-maintainers
+/SECURITY_CONTACTS.md       @openebs/org-maintainers