Support un converted space POJO as byte Array

Any Pojo that not converted to SpaceDocument by the space, assume as inconvertible so we serialized it as byte array. the mongo object structure is :

{
"__type__" :"CUSTOM_BINARY",
"__value__":<Binary Data>,
"hash" : 1238792
}

Limitations:
1. nested query not supported for this object in this POJO : {user.name : "abc"} 
2. only equality operation is supported on the whole content by equalization hashs
3. operation >,>=,<,<= on this type of object will return empty clause e.g. { }