Multiple controllers: Select active controller and set default controller (#3169)

* initial commit - not cleanup yet, not usable with imGUI

* Ugly solution to working with ImGUI

* Populate the default controller labels

* Add remove default button

* missing tr calls

* edit imgui flag after updating

* Refactor

* Update sirit

src/common/config.h

@@ -107,6 +107,8 @@ bool isDevKitConsole();        // no set
 bool vkValidationGpuEnabled(); // no set
 bool getIsMotionControlsEnabled();
 void setIsMotionControlsEnabled(bool use);
+std::string getDefaultControllerID();
+void setDefaultControllerID(std::string id);
 
 // TODO
 bool GetLoadGameSizeEnabled();