Move all love::Type initialisation to their respective (new) files

Previously Data, Stream, Drawable and Image (and for some reason Filesystem) had types in types.cpp

--HG--
branch : dynamiccore2

src/modules/filesystem/Filesystem.cpp

@@ -42,6 +42,8 @@ namespace love
 namespace filesystem
 {
 
+love::Type Filesystem::type("filesystem", &Module::type);
+
 Filesystem::Filesystem()
 {
 }