Add support for Iterable<String> and Map<?, String>

[mkay1375]

Though Iterable<T> and Map<?, T> (whereas T is not primitive type) are supported, Iterable<String> (e.g. List<String>) and Map<?, String> are not supported.

Supporting all implementations of Iterable<T> and Map<K, V>, is not possible. I suggest we only support types which JPA is supporting which are:

Iterables: ArrayList, Vector, Stack, LinkedList, ArrayDeque, PriorityQueue, HashSet, LinkedHashSet, TreeSet.

Maps: HashMap, Hashtable, WeakHashMap, IdentityHashMap, LinkedHashMap, TreeMap and Properties.

We should also support array of strings.

After implementing this feature we would be able to use Hiss in this manner:

@Encrypted
List<String> list = new ArrayList<>();

@Encrypted
Map<String, String> map = new HashMap<>();

@Encrypted
String[] strings = new String[]{};