Add Kotlinx Kover test coverage calculator (#199)

* Add Kotlin Kover

* Add AuthKtorConfiguration tests

* Ensure at least 25% code coverage

* Exclude Previews from code coverage

* Specify Kover report path for SonarQube

* Add Kover xml report task

* Extract sonar to a separate step

* Add some exclusions and minimum coverage

* Exclude Hilt-generated classes

* Add shopping list view model tests

* Reduce the coverage requirement

settings.gradle.kts

@@ -23,6 +23,8 @@ dependencyResolutionManagement {
 
 rootProject.name = "Mealient"
 
+System.setProperty("sonar.gradle.skipCompile", "true")
+
 include(":app")
 include(":architecture")
 include(":database")