preloading: Export NavigationHandleUserDataType to UKM

This CL exports Navigation.NavigationHandleUserDataType to UKM to
 extend the information of prerender trigger types.
This CL also moves chrome/p_l_m/b/navigation_handle_user_data.* to
component/ to solve dependency issue for
chrome/p_l_m/b/o/prerender_page_load_metrics_observer.cc

UKM collection review document:
https://docs.google.com/document/d/1g6HmhWdI9oZPaU2FdtMJ--9I6oLbyvaiiEwlo17_mH0/edit?usp=sharing&resourcekey=0-wELMFd132Ex5wYEmkUFBBw

Bug: 333258860
Change-Id: I5f62b65f80f6fd57a2304644a7328545f54a4716
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5391563
Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Huanpo Lin <robertlin@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1290470}