Move credential-management/support/fedcm to dedicated FedCM directory
This CL moves most of wpt/credential-management/support/fedcm to
wpt/fedcm/support
BUG=347026221
Change-Id: Id3f62c10e6229701fbc2d1d19e8e91130816757c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5635078
Commit-Queue: Peter Kotwicz pkotwicz@chromium.org
Reviewed-by: Christian Biesinger cbiesinger@chromium.org
Cr-Commit-Position: refs/heads/main@{#1317396}