Merge branch 'add_folders' into 'master'

add folder for 1.rust初阶 2.rust中阶 3.rust高阶 4.rust实践

See merge request !1

data/1.rust初阶/1.预备知识/1.rust简介/config.json

@@ -11,6 +11,42 @@
             ],
             "children": []
         }
+    }, 
+    {
+      "为什么选择Rust": {
+          "keywords": [
+              "为什么选择Rust",
+              "安全",
+              "快速",
+              "高生产力",
+              "Rust"
+          ],
+          "children": []
+      }
+    }, 
+    {
+      "哪些领域使用Rust": {
+          "keywords": [
+              "哪些领域使用Rust",
+              "命令行",
+              "WebAssembly",
+              "网络编程",
+              "嵌入式",
+              "Rust"
+          ],
+          "children": []
+      }
+    }, 
+    {
+      "生产环境中的Rust": {
+          "keywords": [
+              "生产环境中的Rust",
+              "公司使用Rust",
+              "生产环境",
+              "Rust"
+          ],
+          "children": []
+      }
     }
   ],
   "export": [