Support top-level Kotlin functions in CLI

[volivan239]

Description

Top-level Kotlin functions are supported in plugin right now, but currently they don't work correctly in cli.

To Reproduce

Launch UtBot from cli for the following file (last argument is samples.BitoperationsKt):

package samples

fun xor(x: Int, y: Int): Boolean {
    return x xor y == 0
}

Expected behavior

Tests are generated

Actual behavior

Exception is thrown

Visual proofs (screenshots, logs, images)

java.lang.UnsupportedOperationException: Packages and file facades are not yet supported in Kotlin reflection. Meanwhile please use Java reflection to inspect this class: class samples.BitoperationsKt
	at kotlin.reflect.jvm.internal.KClassImpl.reportUnresolvedClass(KClassImpl.kt:310)
	at kotlin.reflect.jvm.internal.KClassImpl.access$reportUnresolvedClass(KClassImpl.kt:44)
	at kotlin.reflect.jvm.internal.KClassImpl$Data$descriptor$2.invoke(KClassImpl.kt:56)
	at kotlin.reflect.jvm.internal.KClassImpl$Data$descriptor$2.invoke(KClassImpl.kt:48)
	at kotlin.reflect.jvm.internal.ReflectProperties$LazySoftVal.invoke(ReflectProperties.java:93)
	at kotlin.reflect.jvm.internal.ReflectProperties$Val.getValue(ReflectProperties.java:32)
	at kotlin.reflect.jvm.internal.KClassImpl$Data.getDescriptor(KClassImpl.kt:48)
	at kotlin.reflect.jvm.internal.KClassImpl.getDescriptor(KClassImpl.kt:182)
	at kotlin.reflect.jvm.internal.KClassImpl.isData(KClassImpl.kt:277)
	at org.utbot.framework.plugin.api.util.IdUtilKt.isData(IdUtil.kt:397)
	at org.utbot.framework.util.ImplicitlyDeclaredMethodsKt.isKnownImplicitlyDeclaredMethod(ImplicitlyDeclaredMethods.kt:18)
	at org.utbot.cli.GenerateTestsCommand.run(GenerateTestsCommand.kt:102)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:204)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:213)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:17)
	at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:396)
	at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:393)
	at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:411)
	at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:436)
	at org.utbot.cli.ApplicationKt.main(Application.kt:31)