feat: update ownership stablecoin examples

this change updates ownership of stable coins
example

Ticket:  TMS-1406

TICKET: TMS-1406

Author: sachushaji

CODEOWNERS

@@ -101,6 +101,7 @@
 # Examples
 /examples/ @BitGo/ethalt-team
 /examples/ts/btc/ @BitGo/btc-team
+/examples/ts/stablecoin @Bitgo/gousd-team
 
 # Trade
 /modules/sdk-core/src/bitgo/address-book/ @BitGo/prime