CMake: Add method to query server mode support to CMakeTool

Change-Id: I88ce643749d2d8f801b20a2c6d7555348292af94
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/cmakeprojectmanager/cmaketool.cpp

@@ -199,6 +199,14 @@ TextEditor::Keywords CMakeTool::keywords()
     return TextEditor::Keywords(m_variables, m_functions, m_functionArgs);
 }
 
+bool CMakeTool::hasServerMode() const
+{
+    supportedGenerators(); // server mode is queried from the output of -E capabilities,
+                           // just like the generators
+
+    return m_hasServerMode;
+}
+
 bool CMakeTool::isAutoDetected() const
 {
     return m_isAutoDetected;

src/plugins/cmakeprojectmanager/cmaketool.h

@@ -87,6 +87,7 @@ public:
     bool isAutoRun() const;
     QList<Generator> supportedGenerators() const;
     TextEditor::Keywords keywords();
+    bool hasServerMode() const;
 
     bool isAutoDetected() const;
     QString displayName() const;