[Serialization] Reorganize module structure

plugins/kotlinx-serialization/testData/diagnostics/Transients.kt

@@ -0,0 +1,12 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER,-UNUSED_VARIABLE
+// WITH_STDLIB
+// FILE: test.kt
+import kotlinx.serialization.*
+
+@Serializable
+data class WithTransients(<!TRANSIENT_MISSING_INITIALIZER!>@Transient val missing: Int<!>) {
+    <!TRANSIENT_IS_REDUNDANT!>@Transient<!> val redundant: Int get() = 42
+
+    @Transient
+    lateinit var allowTransientLateinitWithoutInitializer: String
+}