chore: Update CODEOWNERS for Platform and infra-related code (#18938)

* chore: Update CODEOWNERS for Platform and infra-related code

* Added more high-risk files/folders

.github/CODEOWNERS

@@ -1,3 +1,6 @@
+/apps/api/**/* @calcom/Platform
+/deploy/**/* @calcom/Foundation
+/infra/**/* @calcom/Foundation
 /packages/app-store/applecalendar/**/* @calcom/Foundation
 /packages/app-store/caldavcalendar/**/* @calcom/Foundation
 /packages/app-store/exchange2013calendar/**/* @calcom/Foundation
@@ -9,3 +12,9 @@
 /packages/app-store/larkcalendar/**/* @calcom/Foundation
 /packages/app-store/office365calendar/**/* @calcom/Foundation
 /packages/app-store/zohocalendar/**/* @calcom/Foundation
+/packages/core/getUserAvailability.ts @calcom/Foundation
+/packages/features/bookings/lib/handleNewBooking/**/* @calcom/Foundation
+/packages/lib/slots.ts @calcom/Foundation
+/packages/platform/**/* @calcom/Platform
+/packages/prisma/**/* @calcom/Foundation
+/packages/trpc/server/routers/viewer/slots/**/* @calcom/Foundation