Have Windows plugins (.dll) searched by plugin manager loader. Added .pro file for filesource input plugin

plugins/samplesource/filesource/filesource.pro

@@ -0,0 +1,33 @@
+#--------------------------------------------------------
+#
+# Pro file for Android and Windows builds with Qt Creator
+#
+#--------------------------------------------------------
+
+TEMPLATE = lib
+CONFIG += plugin
+
+QT += core gui widgets multimedia
+
+TARGET = inputfilesource
+INCLUDEPATH += $$PWD
+INCLUDEPATH += ../../../sdrbase
+
+CONFIG(release): build_subdir = release
+CONFIG(debug): build_subdir = debug
+
+SOURCES += filesourcegui.cpp\
+	filesourceinput.cpp\
+	filesourceplugin.cpp\
+	filesourcethread.cpp
+
+HEADERS += filesourcegui.h\
+	filesourceinput.h\
+	filesourceplugin.h\
+	filesourcethread.h
+
+FORMS += filesourcegui.ui
+
+LIBS += -L../../../sdrbase/$${build_subdir} -lsdrbase
+
+RESOURCES = ../../../sdrbase/resources/res.qrc

sdrangel.windows.pro

@@ -6,6 +6,7 @@
 
 TEMPLATE = subdirs
 SUBDIRS = sdrbase
+SUBDIRS += plugins/samplesource/filesource
 
 # Main app must be last
 CONFIG += ordered

sdrbase/plugin/pluginmanager.cpp

@@ -448,7 +448,7 @@ void PluginManager::loadPlugins(const QDir& dir)
 
 	foreach (QString fileName, pluginsDir.entryList(QDir::Files))
 	{
-		if (fileName.endsWith(".so"))
+		if (fileName.endsWith(".so") || fileName.endsWith(".dll"))
 		{
 			qDebug() << "PluginManager::loadPlugins: fileName: " << qPrintable(fileName);