Added FeatureType Libraries to build.properties include path

plugins/org.yakindu.sct.generator.c/build.properties

@@ -1,2 +1,6 @@
 source.. = src/
-bin.includes = META-INF/,.
+bin.includes = META-INF/,\
+               .,\
+               library/,\
+               plugin.xml
+src.includes = library/

plugins/org.yakindu.sct.generator.cpp/build.properties

@@ -1,4 +1,5 @@
 source.. = src/
 bin.includes = META-INF/,\
                .,\
+               library/,\
                plugin.xml

plugins/org.yakindu.sct.generator.java/build.properties

@@ -2,4 +2,5 @@ source.. = src/,\
            src-gen
 bin.includes = META-INF/,\
                .,\
-               plugin.xml
+               plugin.xml,\
+               library/