refactor: split services into individual files

src/runtime/server/services/connection.ts

@@ -0,0 +1,20 @@
+import type { ConnectOptions } from 'mongoose'
+import { logger } from '@nuxt/kit'
+import mongoose from 'mongoose'
+
+// @ts-ignore
+import { useRuntimeConfig } from '#imports'
+
+export async function defineMongooseConnection({ uri, options }: { uri?: string; options?: ConnectOptions } = {}): Promise<void> {
+  const config = useRuntimeConfig().mongoose
+  const mongooseUri = uri || config.uri
+  const mongooseOptions = options || config.options
+
+  try {
+    await mongoose.connect(mongooseUri, { ...mongooseOptions })
+    logger.success('Connected to `MongoDB`')
+  }
+  catch (err) {
+    logger.error('Error connecting to `MongoDB`', err)
+  }
+}