Add particle creator component with Three.js integration CREDITS: Junie

Introduced the `ParticlesComponent` for creating and visualizing particles using Three.js. Added associated routes, HTML, SCSS, and tests. Updated `package.json` to include `three` and `@types/three` as dependencies. Adjusted app navigation to include the particles page.

frontend/src/app/app.routes.ts

@@ -5,6 +5,10 @@ export const routes: Routes = [
     path: '',
     loadComponent: () => import('./home/home.component').then(m => m.HomeComponent)
   },
+  {
+    path: 'particles',
+    loadComponent: () => import('./particles/particles.component').then(m => m.ParticlesComponent)
+  },
   {
     path: 'map',
     loadComponent: () => import('./map/map.component').then(m => m.MapComponent)
@@ -105,6 +109,8 @@ export const routes: Routes = [
     path: 'forms',
     loadComponent: () => import('./forms/forms.component').then(m => m.FormsComponent)
   },
+  {
+    path: 'particles',
+    loadComponent: () => import('./particles/particles.component').then(m => m.ParticlesComponent)
+  },
 ];
-
-