add HEAD semantic token types

package.json

@@ -453,6 +453,16 @@
         "superType": "label",
         "description": "Name of a git ref from a remote."
       },
+      {
+        "id": "magit-head-name",
+        "superType": "label",
+        "description": "Name of the (local) HEAD git ref."
+      },
+      {
+        "id": "magit-remote-head-name",
+        "superType": "label",
+        "description": "Name of a HEAD git ref on a remote repo."
+      },
       {
         "id": "magit-tag-name",
         "superType": "label",
@@ -468,6 +478,12 @@
           "magit-remote-ref-name": [
             "variable.other.constant"
           ],
+          "magit-head-name": [
+            "entity.name.tag"
+          ],
+          "magit-remote-head-name": [
+            "variable.object.property"
+          ],
           "magit-tag-name": [
             "string.highlight"
           ]

src/common/constants.ts

@@ -14,5 +14,7 @@ export const MagitDocumentSelector: DocumentSelector = { scheme: MagitUriScheme,
 export enum SemanticTokenTypes {
   RefName = 'magit-ref-name',
   RemoteRefName = 'magit-remote-ref-name',
+  HeadName = 'magit-head-name',
+  RemoteHeadName = 'magit-remote-head-name',
   TagName = 'magit-tag-name',
-}
+}