Add `switch` command

Change-Id: I5db53925f1710e29b49398621e6b634889f1df15
diff --git a/src/interpreter.hpp b/src/interpreter.hpp
index c59e3d2..36c9388 100644
--- a/src/interpreter.hpp
+++ b/src/interpreter.hpp
@@ -32,6 +32,7 @@
     void operator()(const prepare_& prepare) const;
     void operator()(const exec_& exec) const;
     void operator()(const cancel_& cancel) const;
+    void operator()(const switch_& switch_cmd) const;
 
 private:
     [[nodiscard]] std::string buildTypeInfo(const std::string& path) const;