Replace LiveData with Flow

[uhooi]

References

• https://twitter.com/the_uhooi/status/1473855771079503875?s=20
• https://developer.android.com/kotlin/flow
• https://twitter.com/at_sushi_at/status/1454727067392569348?s=20
• https://at-sushi.work/blog/43
• https://medium.com/androiddevelopers/migrating-from-livedata-to-kotlins-flow-379292f419fb
• https://medium.com/androiddevelopers/a-safer-way-to-collect-flows-from-android-uis-23080b1f8bda
• https://developer.android.com/topic/libraries/data-binding/observability?authuser=1#stateflow

[github-actions[bot]]

👋 Thanks for reporting! Please PR :)