Replace use of GlobalScope with Application CouroutineScope

[swapnilkadlag]

I noticed that the current usage of GlobalScope while seeding the initial database is not ideal, for the reasons mentioned in the following article https://elizarov.medium.com/the-reason-to-avoid-globalscope-835337445abc Hence I would like to propose a pull request to replace usage of GlobalScope with Application CoroutineScope #40