Have game-related files transferred by the client

There are variety of game-related resources that may improve overall convenience of gameplay
Example: game maps, game scenarios, bug fixes, gameplay patches (mods), external tools

We should provide a user with an option to fetch those from the server using the client

The issue proposes client-side fetching of game maps, scenarios, bug fixes, gameplay patches, and external tools from the server, but names no files, tests, or entry points. First map how the client and server currently handle resource transfer; done would mean users have an option to fetch the listed game-related resources through the client.

Written by the indexing model from the issue text.