amf0 utest: remove the old amf0 read any, discovery object ant use object to read itself.
amf0 utest: finish amf0 any read/write utest
amf0 utest: refine interface of amf0, only export required objects
refine code, array to ecma_array.
amf0 utest: remove the object read/write function, directly use object to read or write.