Add simulation API and environment setup components

- Introduced simulation.js API for creating and managing simulations, including methods for creating, preparing, and retrieving simulation statuses.
- Added Step1GraphBuild.vue and Step2EnvSetup.vue components to facilitate the graph building and environment setup processes, enhancing user interaction and workflow.
- Updated MainView.vue to integrate new components and manage the simulation workflow, including step indicators and navigation between steps.
- Created SimulationView.vue for displaying simulation details and managing the simulation environment, improving overall user experience and functionality.

frontend/src/router/index.js

@@ -1,6 +1,7 @@
 import { createRouter, createWebHistory } from 'vue-router'
 import Home from '../views/Home.vue'
 import Process from '../views/MainView.vue'
+import SimulationView from '../views/SimulationView.vue'
 
 const routes = [
   {
@@ -13,6 +14,12 @@ const routes = [
     name: 'Process',
     component: Process,
     props: true
+  },
+  {
+    path: '/simulation/:simulationId',
+    name: 'Simulation',
+    component: SimulationView,
+    props: true
   }
 ]