Add Simplified Chinese localization (#43)

src/main/resources/assets/appmek/lang/zh_cn.json

@@ -0,0 +1,22 @@
+{
+  "text.appmek.chemical": "化学品",
+  "text.appmek.creative_tab": "应用机械",
+  "text.appmek.qio_frequency": "QIO 频率 (%s)",
+
+  "item.appmek.chemical_cell_housing": "ME 化学品元件外壳",
+  "item.appmek.creative_chemical_cell": "创造 ME 化学品元件",
+
+  "item.appmek.chemical_storage_cell_1k": "1k ME 化学品存储元件",
+  "item.appmek.chemical_storage_cell_4k": "4k ME 化学品存储元件",
+  "item.appmek.chemical_storage_cell_16k": "16k ME 化学品存储元件",
+  "item.appmek.chemical_storage_cell_64k": "64k ME 化学品存储元件",
+  "item.appmek.chemical_storage_cell_256k": "256k ME 化学品存储元件",
+
+  "item.appmek.portable_chemical_storage_cell_16k": "16k 便携化学品元件",
+  "item.appmek.portable_chemical_storage_cell_1k": "1k 便携化学品元件",
+  "item.appmek.portable_chemical_storage_cell_4k": "4k 便携化学品元件",
+  "item.appmek.portable_chemical_storage_cell_64k": "64k 便携化学品元件",
+  "item.appmek.portable_chemical_storage_cell_256k": "256k 便携化学品元件",
+
+  "item.appmek.chemical_p2p_tunnel": "化学品 P2P 通道"
+}