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Simplify searching by making matching logic less strict.

- do not require full match
- additionally compare by removing all non letter and number chars

src/lib/data/Strings.ts

@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+export const baseCleanup = (str: string) => str.toLowerCase().trim();
+
+export const enhancedCleanup = (str: string): string => baseCleanup(str).replace(/[^a-zA-Z0-9]/g, '');