Add example mod for biomes

Example mod/BiomeHandlerExample.cs

@@ -0,0 +1,34 @@
+using BepInEx;
+using Nautilus.Assets;
+using Nautilus.Assets.PrefabTemplates;
+using Nautilus.Handlers;
+using UnityEngine;
+
+namespace Nautilus.Examples;
+
+[BepInPlugin("com.snmodding.nautilus.biomehandler", "Nautilus Biome Example Mod", Nautilus.PluginInfo.PLUGIN_VERSION)]
+[BepInDependency("com.snmodding.nautilus")]
+public class BiomeHandlerExample : BaseUnityPlugin
+{
+    private void Awake()
+    {
+        // Register the new biome into the game
+        var lilyPadsFogSettings = BiomeHandler.CreateBiomeSettings(new Vector3(20, 5, 6), 0.6f, Color.white, 0.45f,
+            new Color(0.18f, 0.604f, 0.404f), 0.05f, 20, 1, 1.25f, 20);
+#if SUBNAUTICA
+        BiomeHandler.RegisterBiome("nautilusexamplebiome", lilyPadsFogSettings, new BiomeHandler.SkyReference("SkyKelpForest"));
+#elif BELOWZERO
+        BiomeHandler.RegisterBiome("nautilusexamplebiome", lilyPadsFogSettings, new BiomeHandler.SkyReference("SkyLilyPads"));
+#endif
+
+        // Create an atmosphere volume for the biome
+        PrefabInfo volumePrefabInfo = PrefabInfo.WithTechType("NautilusExampleBiomeSphereVolume");
+        CustomPrefab volumePrefab = new CustomPrefab(volumePrefabInfo);
+        AtmosphereVolumeTemplate volumeTemplate = new AtmosphereVolumeTemplate(volumePrefabInfo, AtmosphereVolumeTemplate.VolumeShape.Sphere, "nautilusexamplebiome");
+        volumePrefab.SetGameObject(volumeTemplate);
+        volumePrefab.Register();
+
+        // Add the biome somewhere to the world
+        CoordinatedSpawnsHandler.RegisterCoordinatedSpawn(new SpawnInfo(volumePrefabInfo.ClassID, new Vector3(-1400, -30, 600), Quaternion.identity));
+    }
+}

Nautilus/Assets/PrefabTemplates/AtmosphereVolumeTemplate.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections;
-using Nautilus.Utility;
 using UnityEngine;
 
 namespace Nautilus.Assets.PrefabTemplates;