Feature plugins framework initial commit

sdrbase/plugin/plugininterface.h

@@ -20,6 +20,8 @@ struct SDRBASE_API PluginDescriptor {
 class PluginAPI;
 class DeviceAPI;
 class DeviceUISet;
+class FeatureUISet;
+class WebAPIAdapterInterface;
 class PluginInstanceGUI;
 class QWidget;
 class DeviceSampleSource;
@@ -31,6 +33,7 @@ class MIMOChannel;
 class ChannelAPI;
 class ChannelWebAPIAdapter;
 class DeviceWebAPIAdapter;
+class Feature;
 
 class SDRBASE_API PluginInterface {
 public:
@@ -316,6 +319,18 @@ public:
     virtual DeviceWebAPIAdapter* createDeviceWebAPIAdapter() const {
         return nullptr;
     }
+
+    // Features
+
+    virtual PluginInstanceGUI* createFeatureGUI(FeatureUISet *featureUISet, Feature *feature) const
+    {
+        return nullptr;
+    }
+
+    virtual Feature* createFeature(WebAPIAdapterInterface *webAPIAdapterInterface) const
+    {
+        return nullptr;
+    }
 };
 
 Q_DECLARE_INTERFACE(PluginInterface, "SDRangel.PluginInterface/0.1")