Add Kravets Levko to codeowners (#218)

Signed-off-by: Levko Kravets <[email protected]>

Author: kravets-levko

.github/CODEOWNERS

@@ -2,5 +2,5 @@
 # the repo. Unless a later match takes precedence, these
 # users will be requested for review when someone opens a
 # pull request.
-*       @yunbodeng-db @andrefurlan-db @rcypher-databricks @jadewang-db
+*       @yunbodeng-db @andrefurlan-db @rcypher-databricks @jadewang-db @kravets-levko