Add basic profiler support
- Moved profiling-related helpers to profiling.mjs
- Added bottom-up profiler table
- Added mini-timeline overview wit opt/deopt events and usage graph
- Added flame-graph, pivoted on the currently selected function

Drive-by-fixes:
- Added/updated jsdoc type information
- Fixed static symbols (builtins, bytecodehandlers) that were both
  added by the CppEntriesProvider and from code-events in the v8.log
- Support platform-specific (linux/macos) dynamic symbol loader by
  adding a query path ('/v8/info/platform') to lws-middleware.js
- added css var --selection-color

Bug: v8:10644
Change-Id: I6412bec63eac13140d6d425e7d9cc33316824c73
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585453Reviewed-by: Patrick Thier <pthier@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80192}