refactor(components): add types and clean imports

Add TypeScript declarations for LoadingSkeleton component to improve
type safety across the app. Extend the component registry for better
type inference.

Update LeaderboardPageEntriesTableSkeletonRow to include typed Args for
rankText, enhancing component API clarity.

Remove unused imports (task, tracked) from entries-table component to
clean up the codebase and reduce clutter.

Author: rohitpaulk

app/components/leaderboard-page/entries-table.ts

@@ -5,8 +5,6 @@ import type LeaderboardEntryModel from 'codecrafters-frontend/models/leaderboard
 import type LeaderboardRankCalculationModel from 'codecrafters-frontend/models/leaderboard-rank-calculation';
 import type Store from '@ember-data/store';
 import { inject as service } from '@ember/service';
-import { task } from 'ember-concurrency';
-import { tracked } from '@glimmer/tracking';
 
 interface Signature {
   Element: HTMLDivElement;

app/components/leaderboard-page/entries-table/skeleton-row.ts

@@ -2,6 +2,10 @@ import Component from '@glimmer/component';
 
 interface Signature {
   Element: HTMLTableRowElement;
+
+  Args: {
+    rankText: string;
+  };
 }
 
 export default class LeaderboardPageEntriesTableSkeletonRow extends Component<Signature> {}

app/components/loading-skeleton.ts

@@ -20,3 +20,9 @@ export default class LoadingSkeleton extends Component<Signature> {
     }
   }
 }
+
+declare module '@glint/environment-ember-loose/registry' {
+  export default interface Registry {
+    LoadingSkeleton: typeof LoadingSkeleton;
+  }
+}