LibUnicode: Generate per-locale text layout information

Currently contains just each locale's character order, but is set up to
easily add other text layout fields from the CLDR if ECMA-402 eventually
requires them.

Userland/Libraries/LibUnicode/Forward.h

@@ -14,6 +14,7 @@ enum class Block : u16;
 enum class CalendarFormatType : u8;
 enum class CalendarPatternStyle : u8;
 enum class CalendarSymbol : u8;
+enum class CharacterOrder : u8;
 enum class CompactNumberFormatType : u8;
 enum class Condition : u8;
 enum class Currency : u16;