Multi device support: set version to 2.0.0 in all plugins

plugins/samplesource/airspy/airspyplugin.cpp

@@ -26,7 +26,7 @@
 
 const PluginDescriptor AirspyPlugin::m_pluginDescriptor = {
 	QString("Airspy Input"),
-	QString("---"),
+	QString("2.0.0"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,

plugins/samplesource/bladerf/bladerfplugin.cpp

@@ -25,7 +25,7 @@
 
 const PluginDescriptor BlderfPlugin::m_pluginDescriptor = {
 	QString("BladerRF Input"),
-	QString("---"),
+	QString("2.0.0"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,

plugins/samplesource/filesource/filesourceplugin.cpp

@@ -25,7 +25,7 @@
 
 const PluginDescriptor FileSourcePlugin::m_pluginDescriptor = {
 	QString("File source input"),
-	QString("---"),
+	QString("2.0.0"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,

plugins/samplesource/hackrf/hackrfplugin.cpp

@@ -27,7 +27,7 @@
 
 const PluginDescriptor HackRFPlugin::m_pluginDescriptor = {
 	QString("HackRF Input"),
-	QString("---"),
+	QString("2.0.0"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,

plugins/samplesource/rtlsdr/rtlsdrplugin.cpp

@@ -9,7 +9,7 @@
 
 const PluginDescriptor RTLSDRPlugin::m_pluginDescriptor = {
 	QString("RTL-SDR Input"),
-	QString("---"),
+	QString("2.0.0"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,

plugins/samplesource/sdrdaemon/sdrdaemonplugin.cpp

@@ -25,7 +25,7 @@
 
 const PluginDescriptor SDRdaemonPlugin::m_pluginDescriptor = {
 	QString("SDRdaemon input"),
-	QString("---"),
+	QString("2.0.0"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,