Add manage other financial accounts preference

In the follow-up change, we'd add a listener for clicking on the
preference which would show all pix accounts.

Mock: https://screenshot.googleplex.com/4KupCEDTTVZgdg6
Implementation: https://screenshot.googleplex.com/6z372ymAJmFLfKD

Bug: b/302383443
Change-Id: I141a475601887598add8c9599695846cf9f26ed0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5384677


Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Lijin Shen <lazzzis@google.com>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Siddharth Shah <siashah@chromium.org>
Reviewed-by: Vishwas Uppoor <vishwasuppoor@google.com>
Cr-Commit-Position: refs/heads/main@{#1281972}