Add vthapar to CODEOWNERS

This adds @vthapar to CODEOWNERS as requested, as he mets the
requirements and he's the core designer and contributor for lighthouse.

Fixes-Issue: submariner-io/submariner#688

Signed-off-by: Miguel Angel Ajo <majopela@redhat.com>

CODEOWNERS

@@ -1,8 +1,8 @@
-* 			@mangelajo @tpantelis @Oats87
-/.github/workflows/ 	@mangelajo @tpantelis @Oats87 @mkolesnik
-/scripts/ 		@mangelajo @tpantelis @Oats87 @mkolesnik
-Makefile* 		@mangelajo @tpantelis @Oats87 @mkolesnik
-Dockerfile.dapper 	@mangelajo @tpantelis @Oats87 @mkolesnik
-package/ 		@mangelajo @tpantelis @Oats87 @mkolesnik
-go.mod 			@mangelajo @tpantelis @Oats87 @skitt
-go.sum 			@mangelajo @tpantelis @Oats87 @skitt
+* 			@mangelajo @tpantelis @Oats87 @vthapar
+/.github/workflows/ 	@mangelajo @tpantelis @Oats87 @vthapar @mkolesnik
+/scripts/ 		@mangelajo @tpantelis @Oats87 @vthapar @mkolesnik
+Makefile* 		@mangelajo @tpantelis @Oats87 @vthapar @mkolesnik
+Dockerfile.dapper 	@mangelajo @tpantelis @Oats87 @vthapar @mkolesnik
+package/ 		@mangelajo @tpantelis @Oats87 @vthapar @mkolesnik
+go.mod 			@mangelajo @tpantelis @Oats87 @vthapar @skitt
+go.sum 			@mangelajo @tpantelis @Oats87 @vthapar @skitt