Add certificate and https to allow --host (and testing on mobile)

nuxt.config.ts

@@ -1,5 +1,7 @@
 // https://nuxt.com/docs/api/configuration/nuxt-config
 import vuePlugin from 'rollup-plugin-vue'
+import fs from 'node:fs'
+import path from 'node:path'
 
 export default defineNuxtConfig({
   compatibilityDate: '2024-04-03',
@@ -168,5 +170,11 @@ export default defineNuxtConfig({
         }
       }
     }
+  },
+  devServer: {
+    https: {
+      key: fs.readFileSync(path.resolve(__dirname, 'localhost+1-key.pem')).toString('utf-8'),
+      cert: fs.readFileSync(path.resolve(__dirname, 'localhost+1.pem')).toString('utf-8'),
+    }
   }
 })