Migration to Java 8 Date-Time API

Provide a brief summary of the planned work

The project is using various approaches to date-time management. We should streamline those approaches into using only one approach – Java 8 Date-Time API.

Detailed overview

Due to historical reasons and migrations, the project currently uses various date-time management approaches:

SQL Date
SQL Date Time
Java (7) Date Time
Java (8) Date Time
Joda Time
Kotlin Date Time

Now that the project is more stable, we can use a single approach — the present day's standard: Java 8 Date Time. Time management happens on every layer, so there's no one place to look at and solve the problems from there.

Hint/location:

https://www.baeldung.com/java-8-date-time-intro
com.appifyhub.monolith.features.user.domain.service.SignupCodeServiceImplTest#cleanDates
com.appifyhub.monolith.util.extension.DateExtensionsKt#truncateTo

List the acceptance criteria

All other date-time management approaches have been eliminated from the codebase
Additional Gradle dependencies have been removed
[optional] JodaTime is removed from build.gradle.kts
Tests are updated to reflect those changes, and passing
If needed, documentation is updated to reflect these changes

Include any additional notes (optional)

No response

appifyhub / monolith