This moves Module and other module-related classes and definitions out
of src/objects{.h,-inl.h,.cc} into src/objects/module{.h,-inl.h,.cc}.

Also moves the contents of src/objects/module-info.h there.

R=marja@chromium.org

Bug: v8:1569, v8:5402
Change-Id: I49064bb4a5c5a6f409274c287e06e8dda351d615
Reviewed-on: https://chromium-review.googlesource.com/626818
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47540}