Offload subrecords of GameState to other modules (#1667)

This is a continuation of #1652.

Most of the sub-records are bundled into `Swarm.Game.State.Substate`, but we create a `Swarm.Game.State.Robot` module just for robots.

We introduce a `zoomRobots` function so that applicable functions can operate directly on `Robots` state instead of `GameState`.

## Size comparison

### Before

| File | Lines |
| --- | --- |
| `State.hs` | 1569 |

### After

| File | Lines |
| --- | --- |
| `State.hs` | 812 |
| `Substate.hs` | 497 |
| `Robot.hs` | 395 |
| `Config.hs` | 21 |
## For follow-up PR:
- [ ]  Remove exports of `_viewCenter` and `_focusedRobotID` from `Swarm.Game.State.Robot`

src/Swarm/Game/Scenario/Topography/Structure/Recognition/Tracking.hs

@@ -32,6 +32,7 @@ import Swarm.Game.Scenario.Topography.Structure.Recognition.Log
 import Swarm.Game.Scenario.Topography.Structure.Recognition.Registry
 import Swarm.Game.Scenario.Topography.Structure.Recognition.Type
 import Swarm.Game.State
+import Swarm.Game.State.Substate
 import Swarm.Game.Universe
 import Swarm.Game.World.Modify
 import Text.AhoCorasick