compiler: layout OatMethodQuickCode by profile hotness

Re-arrange all the compiled oat code by using the profile information.
If no profile is available, it retains the original order
(sorted by class_def_idx, method_idx).

Methods are all binned together in a group according to the hotness flags:
 -- not hot at all
 -- all hot
 -- all hot and startup
 -- all hot and post-startup
 -- all hot and startup and poststartup
 -- all startup
 -- all startup and post-startup
 -- all post-startup

(See MethodHotness enum definition for up-to-date binning order.)

Methods within a bin also retain the original order. A deduped method
will appear in the bin of the smallest (class_def_idx, method_idx).

Saves 700KB of memory (PSS) for system_server on most devices.

Bug: 64577026
Test: art/test.py  # no regressions
Test: art/testrunner/testrunner.py -t 661-oat-writer-layout  # new test
Change-Id: I40e9907d095b4a3b48bff0df8799954ef135fc19