Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibUnicode/PluralRules.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2022-2024, Tim Flynn <trflynn89@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/StringView.h>
+
+namespace Unicode {
+
+enum class PluralForm {
+    Cardinal,
+    Ordinal,
+};
+PluralForm plural_form_from_string(StringView);
+StringView plural_form_to_string(PluralForm);
+
+enum class PluralCategory {
+    Other,
+    Zero,
+    One,
+    Two,
+    Few,
+    Many,
+
+    // https://unicode.org/reports/tr35/tr35-numbers.html#Explicit_0_1_rules
+    ExactlyZero,
+    ExactlyOne,
+};
+PluralCategory plural_category_from_string(StringView);
+StringView plural_category_to_string(PluralCategory);
+
+}