feat: 补全 String locale 三方法与 localeCompare 基本档

crates/oxide_kernel/src/builtin/bind.rs

@@ -247,6 +247,9 @@ impl BuiltinWorld {
             ("substring", methods.substring, 2),
             ("toUpperCase", methods.to_upper_case, 0),
             ("toLowerCase", methods.to_lower_case, 0),
+            ("toLocaleUpperCase", methods.to_locale_upper_case, 0),
+            ("toLocaleLowerCase", methods.to_locale_lower_case, 0),
+            ("localeCompare", methods.locale_compare, 1),
             ("trim", methods.trim, 0),
             ("repeat", methods.repeat, 1),
             ("padStart", methods.pad_start, 1),

crates/oxide_kernel/src/builtin/methods.rs

@@ -122,6 +122,9 @@ pub struct StringMethods {
     pub is_well_formed: *const (),
     pub to_well_formed: *const (),
     pub from_raw: *const (),
+    pub to_locale_lower_case: *const (),
+    pub to_locale_upper_case: *const (),
+    pub locale_compare: *const (),
 }
 
 /// RegExp 原型方法的 native 函数指针集合。