Persistence Panel (#22979)

# Summary

This PR adds a new admin panel for persistence.

## Contents

- The panel features information about the current round and detailed
tracking of objects, records and generics.
- The previously introduced toggle-persistence verb has been removed and
integrated into the new panel.
- The panel can be seen by admins, mods and devs, but the
toggle-persistence is still locked to admin permissions only.

## Preview

The images are WIP and subject to change.

<img width="918" height="229" alt="image"
src="https://github.com/user-attachments/assets/16d3d73d-32e6-4907-bdff-d96699c27d49"
/>

<img width="919" height="253" alt="image"
src="https://github.com/user-attachments/assets/92e7f4d9-ccd4-4e79-949d-b8a35039da01"
/>

<img width="923" height="285" alt="image"
src="https://github.com/user-attachments/assets/e3796504-4cc6-4fce-b5f1-4df3486bfbee"
/>

<img width="923" height="270" alt="image"
src="https://github.com/user-attachments/assets/9fbb185d-181a-40ec-b89b-58eafcd47e4d"
/>

code/controllers/subsystems/persistence/persistence_objects.dm

@@ -30,6 +30,8 @@
 		// the object to continue with init logic after the subsystem is done in LateInitialize.
 		var/obj/instance = new typepath()
 		instance.persistent_objects_track_id = data["id"]
+		instance.persistent_objects_created_at = data["created_at"]
+		instance.persistent_objects_expires_at = data["expires_at"]
 		objectsApplyTrackContent(instance, data["content"], data["x"], data["y"], data["z"])
 		objectsRegisterTrack(instance, data["author_ckey"])