Syntax highlighting: support more themes.

Instead of semantic token `type` use `support.type` from the grammar. This is what TypeScript does too.

For keywords from the grammar, use `storage.type` instead of `keyword`. Again this is taken from what TS does.

This change is a no-op on the themes considered so far. But improves theme `Solarized Light`.

There seems to be no way to fix `Mariana Pro (Warm)`, which completely disables semantic highlighting. Looks like TS has the same problem there.

Author: cristianoc

grammars/rescript.tmLanguage.json

@@ -38,7 +38,7 @@
       "match": "\\b(false|true)\\b"
     },
     "RE_KEYWORD": {
-      "name": "keyword",
+      "name": "storage.type",
       "match": "\\b(include|let|module|of|open|type)\\b"
     },
     "commentLine": {

package.json

@@ -32,7 +32,8 @@
 			{
 				"scopes": {
 					"jsx-lowercase": ["entity.name.tag"],
-					"jsx-tag": ["punctuation.definition.tag"]
+					"jsx-tag": ["punctuation.definition.tag"],
+					"support-type": ["support.type"]
 				}
 			}
 		],

server/src/server.ts

@@ -815,7 +815,7 @@ function onMessage(msg: m.Message) {
               tokenTypes: [
                 "operator",
                 "variable",
-                "type",
+                "support-type",
                 "jsx-tag",
                 "class",
                 "enumMember",