Add minecraft bedrock server

servers/bedrock/definitions/biomes/swampland_mutated.biome.json

@@ -0,0 +1,34 @@
+{
+  "format_version": "1.13.0",
+  "minecraft:biome": {
+    "description": {
+      "identifier": "swampland_mutated"
+    },
+    "components": {
+      "minecraft:climate": {
+        "downfall": 0.5,
+        "snow_accumulation": [ 0.0, 0.125 ],
+        "temperature": 0.8
+      },
+      "minecraft:overworld_height": {
+        "noise_params": [ -0.1, 0.3 ]
+      },
+      "minecraft:swamp_surface": {
+        "sea_floor_depth": 7,
+        "sea_floor_material": "minecraft:gravel",
+        "foundation_material": "minecraft:stone",
+        "mid_material": "minecraft:dirt",
+        "top_material": "minecraft:grass",
+        "sea_material": "minecraft:water"
+      },
+
+      "animal": {},
+      "monster": {},
+      "mutated": {},
+      "swamp": {},
+      // "overworld" tag cannot be present in order to match legacy behavior, but is
+      // required for correct world generation -- hence: overworld_generation
+      "overworld_generation": {}
+    }
+  }
+}