build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/plugins/notifier.ts

@@ -0,0 +1,39 @@
+import { App } from "vue";
+
+export class Notifier {
+  private app: App;
+
+  constructor(app: App) {
+    this.app = app;
+  }
+
+  success(message: string): void {
+    this.notification(message, "success");
+  }
+
+  error(message: string): void {
+    this.notification(message, "danger");
+  }
+
+  info(message: string): void {
+    this.notification(message, "info");
+  }
+
+  private notification(message: string, type: string) {
+    this.app.config.globalProperties.$oruga.notification.open({
+      message,
+      duration: 5000,
+      position: "bottom-right",
+      type,
+      hasIcon: true,
+    });
+  }
+}
+
+export const notifierPlugin = {
+  install(app: App) {
+    const notifier = new Notifier(app);
+    app.config.globalProperties.$notifier = notifier;
+    app.provide("notifier", notifier);
+  },
+};