refactor: create pinia from external file

src/renderer/main.ts

@@ -1,10 +1,10 @@
 import { createApp } from 'vue'
-import { createPinia } from 'pinia'
 
 import App from '@/renderer/App.vue'
 import router from '@/renderer/router'
 import vuetify from '@/renderer/plugins/vuetify'
 import i18n from '@/renderer/plugins/i18n'
+import pinia from '@/renderer/plugins/pinia'
 
 // Add API key defined in contextBridge to window object type
 declare global {
@@ -15,6 +15,6 @@ declare global {
 
 const app = createApp(App)
 
-app.use(vuetify).use(i18n).use(router).use(createPinia())
+app.use(vuetify).use(i18n).use(router).use(pinia)
 
 app.mount('#app')

src/renderer/plugins/pinia.ts

@@ -0,0 +1,5 @@
+import { createPinia } from 'pinia'
+
+const pinia = createPinia()
+
+export default pinia