Add Simplified Chinese localization translation (#30)

Translations may contain inaccuracies as not all features have been
tested. When I was testing, I found that some places did not seem to
provide translatable characters. Please fix it.

In order to comply with Chinese word order, some characters/symbols may
be added or removed, so this is not a translation error.

packTemplate/texts/languages.json

@@ -1,3 +1,4 @@
 [
-	"en_US"
+	"en_US",
+	"zh_CN"
 ]

packTemplate/texts/zh_CN.lang

@@ -0,0 +1,7 @@
+pack.name={PACK_NAME}
+pack.description=§u★全息打印§r 资源包生成于 §o{PACK_GENERATION_TIME}§r\n开发者： §l§6SuperLlama88888§r{AUTHORS_SECTION}{DESCRIPTION_SECTION}{CONTROLS_SECTION}\n\n§l总方块数： {TOTAL_MATERIAL_COUNT}\n§r{MATERIAL_LIST}	## ★ at the start forces unicode font which makes it smaller so more text fits in
+pack.description.authors=\n结构作者： {STRUCTURE_AUTHORS[ and ]}	## Authors/Description/Controls will be substituted into the actual description by the JS
+pack.description.description=\n{DESCRIPTION}
+pack.description.controls=\n\n§l控制：§r{CONTROLS}
+
+holoprint.material_list.heading={PACK_NAME} 的材料清单

translations/languages.json

@@ -1,3 +1,4 @@
 {
-	"en": "English"
+	"en": "English",
+	"zh_CN": "简体中文"
 }

translations/zh_CN.json

@@ -0,0 +1,60 @@
+{
+  "app_name": "全息打印",
+  "change_language": "更换语言",
+  "generate": "生成资源包",
+  "generate_heading": "生成投影资源包（`*.mcpack`）",
+  "item_criteria_input.item_name": "物品名称",
+  "item_criteria_input.item_tag": "物品标签",
+  "item_criteria_input.matching": "匹配：",
+  "item_criteria_input.nothing": "暂无",
+  "metadata.description": "描述：",
+  "metadata.description.placeholder": "这是我超酷炫的房子！",
+  "metadata.heading": "元数据",
+  "metadata.pack_icon": "包图标（`*.png`）：",
+  "metadata.pack_name": "包名：",
+  "metadata.reset": "元数据已重置！",
+  "metadata.structure_author": "结构作者：",
+  "metadata.structure_author.placeholder": "guobao2333",
+  "player_controls.toggle_rendering": "切换渲染",
+  "player_controls.change_opacity": "改变不透明度",
+  "player_controls.toggle_validating": "切换验证",
+  "player_controls.change_layer": "改变层数",
+  "player_controls.decrease_layer": "减少层数",
+  "player_controls.move_hologram": "移动投影",
+  "player_controls.change_structure": "改变结构",
+  "player_controls.disable_player_controls": "禁用玩家控制",
+  "reset": "重置",
+  "resource_packs.clear_cache": "清除资源包缓存",
+  "resource_packs.heading": "资源包",
+  "resource_packs.reset": "资源包已重置！",
+  "resource_packs.upload_local": "上传本地资源包：",
+  "settings.advanced": "高级",
+  "settings.heading": "设置",
+  "settings.hologram_scale": "投影比例：",
+  "settings.ignored_blocks": "忽略的方块：",
+  "settings.ignored_blocks.placeholder": "方块_1 方块_2 等",
+  "settings.layer_mode": "图层模式：",
+  "settings.layer_mode.all_below": "下方所有层",
+  "settings.layer_mode.single": "单层",
+  "settings.material_list_language": "材料清单的语言：",
+  "settings.opacity": "投影不透明度：",
+  "settings.opacity_mode": "不透明度模式：",
+  "settings.opacity_mode.fixed_opacity": "固定数值",
+  "settings.opacity_mode.in_game_controls": "游戏内控制",
+  "settings.player_controls": "游戏内控制",
+  "settings.reset": "设置已重置！",
+  "settings.spawn_animation": "生成动画：",
+  "settings.textures": "纹理",
+  "settings.textures.outline_alpha_comparison_mode": "纹理轮廓 Alpha 比较模式：",
+  "settings.textures.outline_alpha_comparison_mode.difference": "不同之处",
+  "settings.textures.outline_alpha_comparison_mode.threshold": "阈值",
+  "settings.textures.outline_alpha_threshold": "纹理轮廓 Alpha 阈值：",
+  "settings.textures.outline_color": "纹理轮廓颜色：",
+  "settings.textures.outline_width": "纹理轮廓宽度：",
+  "settings.textures.outline_width.no_outline": "无",
+  "terms_of_use_notice": "通过使用[HoloPrint](https://github.com/SuperLlama88888/holoprint)生成包，即表示您同意[使用条款](https://github.com/SuperLlama88888/holoprint/blob/main/TERMS_OF_USE.md)。(真的很短！)",
+  "upload": "上传结构文件（`*.mcstructure`）",
+  "upload.button": "上传文件",
+  "upload.button.drop_notice": "或者将文件拖放到此处",
+  "upload.drop_file": "将您的结构文件放在此处"
+}