Refactor player handling: replace player arrays with IDs, implement PlayerSelector component

src/components/moderator/pages/players/PermissionsDropdown.svelte

@@ -18,7 +18,7 @@
   -->
 
 <script lang="ts">
-    import {permissions, players} from "@stores/stores.ts";
+    import {permissions} from "@stores/stores.ts";
     import {Select, SelectContent, SelectItem} from "@components/ui/select";
     import {SelectTrigger} from "@components/ui/select/index.js";
     import {permsRepo} from "@repo/perms.ts";