feat: add a token for list query debounce time

npm/ng-packs/packages/core/src/lib/tokens/index.ts

@@ -1 +1,2 @@
+export * from './list.token';
 export * from './options.token';

npm/ng-packs/packages/core/src/lib/tokens/list.token.ts

@@ -0,0 +1,3 @@
+import { InjectionToken } from '@angular/core';
+
+export const LIST_QUERY_DEBOUNCE_TIME = new InjectionToken<number>('LIST_QUERY_DEBOUNCE_TIME');