feat(search): improve types

`search` is now generic, items returned will match the type closure
of searchedEntries (whatever that is).

lib/features/search/search.js

@@ -6,25 +6,29 @@
  * } } Token
  *
  * @typedef {Token[]} Tokens
+ */
+
+/**
+ * @template R
  *
  * @typedef { {
- *   item: Object,
+ *   item: R,
  *   tokens: Record<string, Tokens>
  * } } SearchResult
- *
- * @typedef {SearchResult[]} SearchResults
  */
 
 /**
  * Search items by query.
  *
- * @param {Object[]} items
+ * @template T
+ *
+ * @param {T[]} items
  * @param {string} pattern
  * @param { {
  *   keys: string[];
  * } } options
  *
- * @returns {SearchResults}
+ * @returns {SearchResult<T>[]}
  */
 export default function search(items, pattern, options) {