Parcelize: Add the Parcelize compiler plugin with sources extracted from Android Extensions plugin (KT-40030)

plugins/parcelize/parcelize-compiler/testData/box/bundle.kt

@@ -0,0 +1,35 @@
+// WITH_RUNTIME
+
+@file:JvmName("TestKt")
+package test
+
+import kotlinx.parcelize.*
+import android.os.Parcel
+import android.os.Parcelable
+import android.os.Bundle
+
+@Parcelize
+data class User(val a: Bundle) : Parcelable
+
+fun box() = parcelTest { parcel ->
+    val test = User(Bundle().apply { putChar("A", 'c'); putByte("B", 40.toByte()); putString("C", "ABC") })
+    test.writeToParcel(parcel, 0)
+
+    val bytes = parcel.marshall()
+    parcel.unmarshall(bytes, 0, bytes.size)
+    parcel.setDataPosition(0)
+
+    val test2 = readFromParcel<User>(parcel)
+
+    assert(compareBundles(test.a, test2.a))
+}
+
+private fun compareBundles(first: Bundle, second: Bundle): Boolean {
+    if (first.size() != second.size()) return false
+
+    for (key in first.keySet()) {
+        if (first.get(key) != second.get(key)) return false
+    }
+
+    return true
+}