Add 'Incorrect Transient' diagnostic

when users write @Transient, they get @kotlin.jvm.Transient, because it's always in auto-import.
This annotation does not work with @Serializable classes; @kotlinx.serialization.Transient should be used instead.

Add quickfix for 'incorrect transient' diagnostic:
'Import kotlinx.serialization.Transient'

plugins/kotlin-serialization/kotlin-serialization-compiler/testData/diagnostics/IncorrectTransient.kt

@@ -0,0 +1,12 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER,-UNUSED_VARIABLE
+// WITH_RUNTIME
+// SKIP_TXT
+
+import kotlinx.serialization.Serializable
+import java.io.Serializable as JavaSerializable
+
+@Serializable
+class Data(val x: Int, <!INCORRECT_TRANSIENT!>@Transient<!> val y: String)
+
+@Serializable
+class Data2(val x: Int, @Transient val y: String) : JavaSerializable

plugins/kotlin-serialization/kotlin-serialization-compiler/testData/diagnostics/IncorrectTransient2.kt

@@ -0,0 +1,20 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER,-UNUSED_VARIABLE
+// WITH_RUNTIME
+// SKIP_TXT
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.Transient
+import java.io.Serializable as JavaSerializable
+import kotlin.jvm.Transient as JavaTransient
+
+@Serializable
+class Data(val x: Int, @Transient val y: String = "a")
+
+@Serializable
+class Data2(val x: Int, @Transient val y: String = "a") : JavaSerializable
+
+@Serializable
+class Data3(val x: Int, @Transient @JavaTransient val y: String = "a") : JavaSerializable
+
+@Serializable
+class Data4(val x: Int, <!INCORRECT_TRANSIENT!>@JavaTransient<!> val y: String)