feat: add _Generic expressions and missing type qualifiers

_Generic is a C11 feature, __restrict__ and _Noreturn were added to type_qualifiers

grammar.js

@@ -475,7 +475,9 @@ module.exports = grammar({
       'const',
       'volatile',
       'restrict',
+      '__restrict__',
       '_Atomic',
+      '_Noreturn',
     ),
 
     _type_specifier: $ => choice(
@@ -736,6 +738,7 @@ module.exports = grammar({
       $.cast_expression,
       $.pointer_expression,
       $.sizeof_expression,
+      $.generic_expression,
       $.subscript_expression,
       $.call_expression,
       $.field_expression,
@@ -865,6 +868,15 @@ module.exports = grammar({
       ),
     )),
 
+    generic_expression: $ => prec(PREC.CALL, seq(
+      '_Generic',
+      '(',
+      $._expression,
+      ',',
+      commaSep1(seq($.type_descriptor, ':', $._expression)),
+      ')',
+    )),
+
     subscript_expression: $ => prec(PREC.SUBSCRIPT, seq(
       field('argument', $._expression),
       '[',