This CL adds code to inline the Int8 and Uint8 getters for DataView
objects in TurboFan in js-call-reducer.cc, as well as a new test file.

It already improves execution speed compared to the Torque baseline
implementation, and implements most of the architecture needed
for inlining the other DataView getters and setters as well.

Change-Id: I0e62b98fd6ec995f7db5ec42ea1eff1f03572f97
Reviewed-on: https://chromium-review.googlesource.com/1119909Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Théotime Grohens <theotime@google.com>
Cr-Commit-Position: refs/heads/master@{#54157}