Added MultiSelectFieldListFilter

So you can select multiple distinct filter values using in queries.

![preview](https://lh3.googleusercontent.com/yS5G6rnWlz0jdH4eXiLwrkV8I8tz4TdZgVLRiSYIGKRpZGYz2kEG0PhjT_TrpBRdmMnJLKEtC69eXbLrxDW9k1BgOOblnwhkSSE_HmcUqCbt1N1deNC7hffoWt4eLA)

Can be improved: 
   * Currently checking the checkbox instead of the link will not apply/disable the filter
   * Also it is set to work on all filter types
   * The display name isn't matching the row display value in this example