In-game map library

[dennwc]

We should definitely implement a UI for the online map library that can be used to get new maps without leaving the game.

Community already made a catalog a while back. Here's some links as a backup:

• https://docs.google.com/spreadsheets/d/1vlL8O1Md0bd47wrkL6oB0B0OBO9L3kL9grfzBZL-z6A/pubhtml?gid=0&single=true
• https://docs.google.com/spreadsheets/d/1vlL8O1Md0bd47wrkL6oB0B0OBO9L3kL9grfzBZL-z6A/edit#gid=0
• https://www.dl.dropboxusercontent.com/s/nm2ved2yf9mq2sr/NoxMaps.zip
• https://www.dl.dropboxusercontent.com/s/36wrhv0o6l8g59y/NoxOtherMaps.zip
• http://archive.noxcommunity.com/maps/

[dennwc]

We registered Nox on mod.io, currently working on populating map list from existing ones.

[dennwc]

The next step:

• https://github.com/noxworld-dev/opennox/issues/283