Add Vasu to codeowners (#631)

Author: chlafreniere

.github/CODEOWNERS

@@ -2,4 +2,4 @@
 # Each line is a file pattern followed by one or more owners.
 # Syntax can be found here: https://docs.github.com/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
 
-* @Charles-Gagnon @lucyzhang929 @chlafreniere @MaddyDev
+* @Charles-Gagnon @lucyzhang929 @chlafreniere @MaddyDev @VasuBhog