The macro magic used to assemble the operator cache in
machine-operator.cc was quite involved and difficult to follow.
This change replaces many macros with templates and simplifies the
logic. Similar changes could also be applied to other operator builders.

Change-Id: Ie4268c59b7c663f1aac360c87e9cce3100c90a29
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2132246
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67055}