Protostream API should support arrays, List, Set, HashTable and Map as root cache entry objects

It should be possible to add implementations of Collection, Set and Map directly as value to a cache.
User expect to use without the need of extra implementation like ProtoAdapter:

    RemoteCache<String, HashMap||Hashtable||ArrayList> cache;
    ArrayList<String> list = new ArrayList<>();
    ....
    cache.put("xx", list);