Use unicode multi-table for remaining hot path lookups

Results in a 15% improvement in the unicode throughput benchmark

kitty/char-props.h

@@ -18,7 +18,9 @@ typedef union CharProps {
         uint8_t shifted_width : 3;
         uint8_t is_non_rendered : 1;
         uint8_t is_emoji_presentation_base : 1;
-        uint8_t : 3;
+        uint8_t is_emoji : 1;
+        uint8_t is_symbol : 1;
+        uint8_t is_combining_char : 1;
     };
     uint16_t val;
 } CharProps;