- Moved graph-phase.ts to graph-phase folder
- Refactored selection.ts, selection-broker.ts, selection-handler.ts, source-resolver.ts

Bug: v8:7327
Change-Id: I922c8730f89c53a73a55414378ac1e29a6397a80
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3714945Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Danylo Boiko <danielboyko02@gmail.com>
Cr-Commit-Position: refs/heads/main@{#81385}