Adding the ability to switch out the JSON list / dataset

[mistermantas]

An important part to the project and I would highly appreciate someone take this on (or else I'll just do it later hah).

The original idea was not to show a random landmark/place but show a random street OR a random bus stop OR a random location, etc. but the site only shows from one list at the moment. So that means adding a way to change between a first, second or third JSON list from a menu / UI.

If you are a contributor for hacktoberfest, no need to find the JSON data, the JSON arrays can be dummies, that means, they can be empty and have lorem ipsum instead of real data.

I can figure out the rest. I need to get a hold of the full list of all the streets and which borough/neighborhood they belong to but that's a bit more work (vilnius/gyventojai is an open source repository that should have all the streets but it's in a messy format so needs some work)