orion-ecs / keen-eye / 20395524465

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Add voxel game sample with biome-based terrain generation

This sample demonstrates how to build a voxel-based game using KeenEyes ECS:

- Chunk-based world storage with 16x16x16 voxel chunks
- Simplex noise terrain generation with multiple biomes
  (Plains, Forest, Desert, Mountains, Tundra, Ocean)
- Temperature and moisture-based biome selection
- Feature placement (trees, cacti, plants) using deterministic noise
- Player movement with AABB collision against voxel terrain
- Chunk loading/unloading based on player view distance
- ASCII side-view visualization for terminal output

Key architecture patterns shown:
- Complex component types (VoxelData, HeightMap) using IComponent directly
- System dependencies via property injection
- Seeded procedural generation for reproducible worlds
- Chunk coordinate to world coordinate transformations

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