Minor, move tests on JvmField into subdirectory

compiler/testData/codegen/box/reflection/properties/jvmField/interfaceCompanionWithAnnotation.kt

@@ -0,0 +1,21 @@
+// !LANGUAGE: +JvmFieldInInterface
+// TARGET_BACKEND: JVM
+// WITH_REFLECT
+
+import kotlin.reflect.full.declaredMemberProperties
+
+annotation class Ann(val value: String)
+
+public class Bar(public val value: String)
+
+interface Foo {
+    companion object {
+        @JvmField @Ann("O")
+        val FOO = Bar("K")
+    }
+}
+
+fun box(): String {
+    val field = Foo.Companion::class.declaredMemberProperties.single()
+    return (field.annotations.single() as Ann).value + (field.get(Foo.Companion) as Bar).value
+}