Added IMetaDataPlugin base class for parsing plugin name, description,

etc... from json metadata file.

core/core.pro

@@ -13,14 +13,16 @@ DEFINES += CORE_LIBRARY
 
 SOURCES += \
     data/user.cpp \
-    context.cpp
+    context.cpp \
+    imetadataplugin.cpp
 
 HEADERS += core.h\
         core_global.h \
     iplugin.h \
     service.h \
     data/user.h \
-    context.h
+    context.h \
+    imetadataplugin.h
 
 unix {
     target.path = /usr/lib