A new kind of synthetic accessors for backing fields, if accessed inside lambda / object literal / local class #KT-9657 Fixed

A set of tests provided
Also #KT-4867 Fixed
Also #KT-8750 Fixed
Slight codegen refactoring

compiler/testData/codegen/box/properties/classFieldInsideNested.kt

@@ -0,0 +1,14 @@
+abstract class Your {
+    abstract val your: String
+
+    fun foo() = your
+}
+
+class My {
+    val my: String = "O"
+        get() = object : Your() {
+            override val your = field
+        }.foo() + "K"
+}
+
+fun box() = My().my