(filters) subnest cities into state

[atonuv]

select state- "do you want to display cities within {state}?" if yes then display a list of {cities} located in selected {state}

[KonklaveTtv]

Venue Selection
1. Select Country ->  Select State/Province -> Select City/Town -> Select Capacity -> Select Genre  -> Select Venue

Countries (Must Select One) State/Province (All or multiples selected via comma-seperated indices) City/Town (All or multiples selected via comma-seperated indices) Capacity (All or multiples selected via comma-seperated indices) Genre (All or multiples selected via comma-seperated indices) Venue (All or multiples selected via comma-seperated indices)

[KonklaveTtv]

https://github.com/KonklaveTtv/VenueSender/commit/7bb78c4873715d3facc941eb3dacf6b21b9508f1

Currently you select Country, then City, the State, but Capacity is failing to show up.