Check Ckey button. (#5786)

# About the pull request


![image](https://github.com/cmss13-devs/cmss13/assets/4447185/508fdf55-1d4e-4dfc-8fbe-61be5f905f07)

# Explain why it's good for the game

I have been wanting to do this at least ever since #5073.
Typing/copypasting keys is annoying.

# Changelog

:cl:
admin: Check Ckey verb is now available on player panel.
/:cl:

code/modules/admin/player_panel/actions/punish.dm

@@ -119,6 +119,14 @@
 	user.admin_holder.player_notes_show(target.ckey)
 	return TRUE
 
+/datum/player_action/check_ckey
+	action_tag = "check_ckey"
+	name = "Check Ckey"
+
+
+/datum/player_action/check_ckey/act(client/user, mob/target, list/params)
+	user.admin_holder.check_ckey(target.ckey)
+	return TRUE
 
 /datum/player_action/reset_xeno_name
 	action_tag = "reset_xeno_name"

tgui/packages/tgui/interfaces/PlayerPanel.jsx

@@ -399,6 +399,14 @@ const PunishmentActions = (props) => {
             disabled={!hasPermission(data, 'show_notes')}
             onClick={() => act('show_notes')}
           />
+          <Button
+            width="100%"
+            icon="clipboard-list"
+            color="average"
+            content="Check Ckey"
+            disabled={!hasPermission(data, 'check_ckey')}
+            onClick={() => act('check_ckey')}
+          />
         </Stack>
       </Section>