Modded pack metadata

- Modded jars ship pack.mcmeta for client resources and mod data
- Modded jars bundle jlibdeflate and its native libraries
- Artifact check requires pack.mcmeta and the jlibdeflate entries
- Artifact check rejects client language resources without pack.mcmeta
- Test loads the pack metadata against the current Minecraft formats

adapters/modded-common/src/main/resources/pack.mcmeta

@@ -0,0 +1,7 @@
+{
+  "pack": {
+    "description": "Iris client resources and mod data",
+    "min_format": [88, 0],
+    "max_format": [107, 1]
+  }
+}