Update app to Jetpack co-rountines and compose

[lambdapioneer]

Should make everything a bit simpler and easier to understand. Also, this will get rid of the deprecation for AsyncTask.

We can still check Java compatibility with the Java classes in the tests.

[nebadesmondc]

Hello,

I am new to Jetpack Compose and Android development, and I am eager to expand my knowledge by contributing to open source projects. If possible, I would like to collaborate on this issue.

Thank you!

[lambdapioneer]

Hey @Dezzy12 sounds great!

I think this issue then sounds ideal for you. Currently, the main activity is super simple and ideally we can keep it like that. So, the main challenge is to avoid over-engineering :)

If you like, feel free to quickly describe your approach here to get some feedback. But likewise, feel free to cook up a simple PR directly.

I've assigned to issue to you, but also feel free to un-assign if at any point you decide to not work on this.

Cheers,
Daniel