[torque-language-server] Add 'new' keyword to syntax highlighting

Bug: v8:8880
Change-Id: I5bd99ca56dfafa71718b12078224bdc90bcfed14
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613246
Commit-Queue: Nico Hartmann <nicohartmann@google.com>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61529}

tools/torque/vscode-torque/syntaxes/torque.tmLanguage.json

@@ -110,7 +110,7 @@
           "match": "\\b(=|\\*=)\\b"
         },
         {
-          "match": "\\b(class)\\s+([A-Za-z0-9]+)",
+          "match": "\\b(class|new)\\s+([A-Za-z0-9]+)",
           "captures": {
             "1": {
               "name": "keyword.other.torque"