This introduces new virtual instance types to further diagnose what's
going on in MapSpace, namely:

 - MAP_ABANDONED_PROTOTYPE_TYPE includes all the abandoned (fast-mode)
   prototype maps.
 - MAP_DEPRECATED_TYPE includes all the deprecated (fast-mode) maps.
 - MAP_DICTIONARY_TYPE includes all the dictionary-mode maps.
 - MAP_PROTOTYPE_DICTIONARY_TYPE includes all the prototype maps in
   dictionary-mode.
 - MAP_PROTOTYPE_TYPE includes all the prototype maps in fast-mode.
 - MAP_STABLE_TYPE includes all the (fast-mode) stable (leaf) maps.

Those maps who don't fall into any of the buckets above are categorized
as MAP_TYPE (as before).

The naming was chosen like this to make it possible to filter for the
relevant maps in the object stats via 'MAP_.*_TYPE'.

Bug: v8:7266
Change-Id: I233734e96a390ddb391bfff8a34a8fec842d1f7f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1554685Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60651}