build: add @coreui/react library version

Author: mrholek

package.json

@@ -1,7 +1,10 @@
 {
   "name": "@coreui/coreui-free-react-admin-template",
-  "version": "4.0.0-alpha.0",
   "description": "CoreUI Free React Admin Template",
+  "version": "4.0.0-alpha.0",
+  "config": {
+    "coreui_library_short_version": "4.0"
+  },
   "author": {
     "name": "CoreUI",
     "url": "https://coreui.io",