Kapt: Add DUMP_DEFAULT_PARAMETER_VALUES flag (KT-29355)

Put initializers on fields when corresponding primary constructor
  parameters have a default value specified. The new behavior
  is available under the new 'DUMP_DEFAULT_PARAMETER_VALUES' flag.

Note that this doesn't affect regular functions with default parameter
  values, as well as primary constructor parameters without a
  'val' or 'var' keyword.

plugins/kapt3/kapt3-compiler/testData/converter/defaultParameterValueOff.kt

@@ -0,0 +1,29 @@
+class Foo(
+    val z: Boolean = true,
+    val b: Byte = 0.toByte(),
+    val c: Char = 'c',
+    val c2: Char = '\n',
+    val sh: Short = 10.toShort(),
+    val i: Int = 10,
+    val l: Long = -10L,
+    val f: Float = 1.0f,
+    val d: Double = -1.0,
+    val s: String = "foo",
+    val iarr: IntArray = intArrayOf(1, 2, 3),
+    val larr: LongArray = longArrayOf(-1L, 0L, 1L),
+    val darr: DoubleArray = doubleArrayOf(7.3),
+    val sarr: Array<String> = arrayOf("a", "bc"),
+
+    // Sic! Unresolved reference not being reported because of partial resolve
+    val cl: Class<*> = User::class.java,
+    val clarr: Array<Class<*>> = arrayOf(User::class.java),
+
+    val em: Em = Em.BAR,
+    val emarr: Array<Em> = arrayOf(Em.FOO, Em.BAR)
+) {
+    fun foo(a: Int = 5) {}
+}
+
+enum class Em {
+    FOO, BAR
+}