Re-imagine the map service in light of the new raster service

[oubiwann]

With the creation of the raster service (see hexagram30/raster#4, etc.), the map service will be divesting of many of its current responsibilities. Lots of questions will arise as part of this, such as:

• What should map focus on?
• How useful will it be as a consumer of the raster service?
• Will it simply be a collection of raster service queries?
• Will it offer some sort of tracking capabilities for players, npc, etc.?
• Will it offer player-level location-based caching?

[oubiwann]

I think the recent tasks identitfied in #39 exhibit how the map service will evolve as it consumes other services (noise, raster) to provide game-facing value.

Might even be able to close this ticket after that one ...