Cleanup resolutions and TS config

packages/core/package.json

@@ -51,10 +51,6 @@
     "sass": "1.80.3",
     "whatwg-fetch": "3.6.20"
   },
-  "resolutions": {
-    "backbone-undo/backbone": "1.3.3",
-    "backbone-undo/underscore": "1.13.1"
-  },
   "keywords": [
     "grapes",
     "grapesjs",

packages/core/tsconfig.json

@@ -2,6 +2,7 @@
   "compilerOptions": {
     "target": "es5",
     "lib": ["dom", "dom.iterable", "esnext"],
+    "types": ["jest", "node"],
     "allowJs": true,
     "sourceMap": true,
     "skipLibCheck": true,