LanguageClient: support additional goto targets in symbol support

Allow to follow to the symbol definition as well as to the type
definition for the symbol under the cursor position.

Change-Id: I8ff50b33a1e739f81b0832b1b28ffc525e1f7177
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/texteditor/texteditoractionhandler.h

@@ -34,10 +34,11 @@ public:
         UnCommentSelection = 2,
         UnCollapseAll = 4,
         FollowSymbolUnderCursor = 8,
-        JumpToFileUnderCursor = 16,
-        RenameSymbol = 32,
-        FindUsage = 64,
-        CallHierarchy = 128
+        FollowTypeUnderCursor = 16,
+        JumpToFileUnderCursor = 32,
+        RenameSymbol = 64,
+        FindUsage = 128,
+        CallHierarchy = 256
     };
     using TextEditorWidgetResolver = std::function<TextEditorWidget *(Core::IEditor *)>;