- Remove ic-processor.html since it's been fully integrated in the
  system-analyzer
- Use new tools/system-analyzer/processor.mjs for command line
  ic-processor
- Update tools landing page
- Partially fix dependencies on web specific components in helper.mjs

Bug: v8:10644
Change-Id: I0c99ff7c7859684e53aa3ab22489b1a8242e1a6e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2498606Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70799}