Windows build: added Hackrf plugin

plugins/samplesource/hackrf/hackrf.pro

@@ -0,0 +1,39 @@
+#--------------------------------------------------------
+#
+# Pro file for Android and Windows builds with Qt Creator
+#
+#--------------------------------------------------------
+
+TEMPLATE = lib
+CONFIG += plugin
+
+QT += core gui widgets multimedia
+
+TARGET = inputhackrf
+
+CONFIG(MINGW32):LIBHACKRFSRC = "D:\softs\hackrf\host"
+INCLUDEPATH += $$PWD
+INCLUDEPATH += ../../../sdrbase
+INCLUDEPATH += $$LIBHACKRFSRC
+
+CONFIG(Release):build_subdir = release
+CONFIG(Debug):build_subdir = debug
+
+SOURCES += hackrfgui.cpp\
+  hackrfinput.cpp\
+  hackrfplugin.cpp\
+  hackrfsettings.cpp\
+  hackrfthread.cpp
+
+HEADERS += hackrfgui.h\
+  hackrfinput.h\
+  hackrfplugin.h\
+  hackrfsettings.h\
+  hackrfthread.h
+
+FORMS += hackrfgui.ui
+
+LIBS += -L../../../sdrbase/$${build_subdir} -lsdrbase
+LIBS += -L../../../libhackrf/$${build_subdir} -llibhackrf
+
+RESOURCES = ../../../sdrbase/resources/res.qrc