fix: add missing peer dep on Angular

- we should make sure user installs Angular 18.0 or higher

Author: ghiscoding

package.json

@@ -61,6 +61,9 @@
     "dequal": "^2.0.3",
     "rxjs": "^7.8.1"
   },
+  "peerDependencies": {
+    "@angular/core": ">=18.0.0"
+  },
   "devDependencies": {
     "@4tw/cypress-drag-drop": "^2.2.5",
     "@angular-devkit/build-angular": "^18.2.11",