chore(github): add wallet-core-india as codeowner

Add @BitGo/wallet-core-india alongside @BitGo/wallet-core as a
default code owner for all files in the repository.

Ticket: WAL-1514
Session-Id: c107cc75-d93e-4f99-b1fd-77050059313a
Task-Id: cbbbb406-2f03-4853-a211-fe2e50863d5c

Author: pranishnepal

.github/CODEOWNERS

@@ -2,4 +2,4 @@
 # Each line is a file pattern followed by one or more owners.
 
 # These owners will be the default owners for everything in the repo.
-* @BitGo/wallet-core
+* @BitGo/wallet-core @BitGo/wallet-core-india