Add tilepad configuring option for voxel-texture

Requires deathcap/voxel-texture@2b8394e39ff24da33147cbc8edee97ab1b1e0445
Initialize texture options to defaults

Requires deathcap/voxel-texture@588cd31fc814d63dd2c6b1dbd68c651e9fb0fba3
Add switching between voxel-texture-shader and voxel-texture modules

Remove useAtlas option

Requires deathcap/voxel-engine@98e25e30fb018fcf5d70c550ca22e160a5bf1b47