Reland "Add a new component layer to migrate supervised_user features and services."

This is a reland of commit f3a6582ebbf9084f8fa851be6d107faf0c7ff3d4 that keeps the dependency on unscaled resources.

Original change's description:
> Add a new component layer to migrate supervised_user features and services.
>
> This component will allow supervised user protections to be shared
> across platforms and between multiple embedders of content.
>
> Migrates supervised user error page to //components.
>
> See existing source at https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/supervised_user/.
>
> Bug: b:260402896, b:260390510
> Change-Id: Id60a2f32281b3f1044033029ceb92cf188b0b297
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4061626
> Reviewed-by: Demetrios Papadopoulos <[email protected]>
> Reviewed-by: Colin Blundell <[email protected]>
> Reviewed-by: Richard Coles <[email protected]>
> Commit-Queue: Nohemi Fernandez <[email protected]>
> Reviewed-by: Peter Boström <[email protected]>
> Cr-Commit-Position: refs/heads/main@{#1080987}

Bug: b:260402896, b:260390510
Change-Id: Ic9c93407a464820ce189c97f7d1bfe63d2502d8a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4092104
Reviewed-by: Colin Blundell <[email protected]>
Reviewed-by: Peter Boström <[email protected]>
Reviewed-by: Demetrios Papadopoulos <[email protected]>
Commit-Queue: Nohemi Fernandez <[email protected]>
Reviewed-by: Richard Coles <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1084057}
diff --git a/components/supervised_user/COMMON_METADATA b/components/supervised_user/COMMON_METADATA
new file mode 100644
index 0000000..b2bd8d8
--- /dev/null
+++ b/components/supervised_user/COMMON_METADATA
@@ -0,0 +1,5 @@
+# Chrome Kids team
+monorail {
+  component: "FamilyExperiences > Browser"
+}
+team_email: "[email protected]"