[roll third_party/pigweed] pw_console: WindowList class and pane movement

- Refactor WindowManager.active_panes into it's own WindowList class.
- Add move window pane left and right feature that will move panes into
  a new vertically split column of windows. This is a simplified verison
  of i3 style window movement.
- Vertical columns can be viewed as a horizontally split stack or a
  tabbed view.
- Add move and resize pane+splits to the [View] menu.

Test: Window Management Steps 1-15
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/55021

third_party/pigweed Rolled-Commits: 21fd9bbf7f9fd7f..54db765cd295fc9
Roller-URL: https://ci.chromium.org/b/8839874241770010000
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8839874241770010000
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I38f7fc354279b4f6e04e669a24aed0fa2cf84141
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/55986
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 21fd9bb..54db765 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 21fd9bbf7f9fd7fd090b89990ddf036605308a99
+Subproject commit 54db765cd295fc9bd905e54b148cc7c053844c3c