fix: 添加react—dnd等插件包，升级react版本

package.json

@@ -102,6 +102,9 @@
     "express": "4.16.4",
     "fontfaceobserver": "2.1.0",
     "gojs": "2.1.49",
+    "react-dnd-html5-backend": "latest",
+    "react-dnd": "latest",
+    "immutability-helper": "latest",
     "history": "4.9.0",
     "hoist-non-react-statics": "3.3.0",
     "immer": "3.0.0",
@@ -112,10 +115,10 @@
     "lodash": "4.17.11",
     "minimist": "1.2.0",
     "prop-types": "15.7.2",
-    "react": "16.8.6",
+    "react": "16.14.0",
     "react-ace": "^9.2.0",
     "react-copy-to-clipboard": "^5.0.4",
-    "react-dom": "16.8.6",
+    "react-dom": "16.14.0",
     "react-grid-layout": "^1.2.5",
     "react-helmet": "6.0.0-beta",
     "react-html-parser": "^2.0.2",
@@ -213,12 +216,12 @@
     "pre-commit": "1.2.2",
     "prettier": "1.17.0",
     "qs": "^6.9.0",
-    "react": "^16.8.6",
+    "react": "^16.14.0",
     "react-app-polyfill": "0.2.2",
-    "react-dom": "^16.8.6",
+    "react-dom": "^16.14.0",
     "react-helmet-async": "^1.0.4",
     "react-router-config": "^5.1.1",
-    "react-test-renderer": "16.8.6",
+    "react-test-renderer": "16.14.0",
     "react-testing-library": "6.1.2",
     "redux-immutable": "^4.0.0",
     "redux-logger": "^3.0.6",