Improvements in skill tree

frontend/package-lock.json

@@ -24,6 +24,7 @@
         "@radix-ui/react-slot": "^1.0.2",
         "@radix-ui/react-switch": "^1.0.3",
         "@radix-ui/react-tabs": "^1.0.4",
+        "@radix-ui/react-toast": "^1.1.5",
         "@vitejs/plugin-react-swc": "^3.5.0",
         "autoprefixer": "^10.4.19",
         "class-variance-authority": "^0.7.0",
@@ -1926,6 +1927,40 @@
         }
       }
     },
+    "node_modules/@radix-ui/react-toast": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/@radix-ui/react-toast/-/react-toast-1.1.5.tgz",
+      "integrity": "sha512-fRLn227WHIBRSzuRzGJ8W+5YALxofH23y0MlPLddaIpLpCDqdE0NZlS2NRQDRiptfxDeeCjgFIpexB1/zkxDlw==",
+      "dependencies": {
+        "@babel/runtime": "^7.13.10",
+        "@radix-ui/primitive": "1.0.1",
+        "@radix-ui/react-collection": "1.0.3",
+        "@radix-ui/react-compose-refs": "1.0.1",
+        "@radix-ui/react-context": "1.0.1",
+        "@radix-ui/react-dismissable-layer": "1.0.5",
+        "@radix-ui/react-portal": "1.0.4",
+        "@radix-ui/react-presence": "1.0.1",
+        "@radix-ui/react-primitive": "1.0.3",
+        "@radix-ui/react-use-callback-ref": "1.0.1",
+        "@radix-ui/react-use-controllable-state": "1.0.1",
+        "@radix-ui/react-use-layout-effect": "1.0.1",
+        "@radix-ui/react-visually-hidden": "1.0.3"
+      },
+      "peerDependencies": {
+        "@types/react": "*",
+        "@types/react-dom": "*",
+        "react": "^16.8 || ^17.0 || ^18.0",
+        "react-dom": "^16.8 || ^17.0 || ^18.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "@types/react-dom": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@radix-ui/react-use-callback-ref": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/@radix-ui/react-use-callback-ref/-/react-use-callback-ref-1.0.1.tgz",