[Ravenwood] Move redirection classes out of f/b/r

For all redirection classes that are not highly tied to Ravenwood's
internal implementation, they should live side-by-side with the original
code it is replacing.

Bug: 375620876
Flag: EXEMPT host test change only
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Change-Id: Ia0742d0144e729b1beb8502fdf86978774a59100
Merged-In: I0d4f2c399e3ba10ff95d690a01fc0bbfb2f8d585