[Ravenwood] Restructure redirection classes

- Rename *_host classes to *_ravenwood
- Move *_ravenwood classes into framework/base/core

Bug: 375620876
Flag: EXEMPT host side change only
Test: f/b/r/scripts/run-ravenwood-tests.sh
Change-Id: I5185358999ae1e920ed12ea742f426811b1a7461