Generate static backing fields for properties in object

#KT-4973 Fixed

compiler/testData/evaluate/constant/objectProperty.kt

@@ -0,0 +1,48 @@
+package test
+
+// val prop1: 1
+val prop1 = A.a
+
+// val prop2: 2
+val prop2 = A.a + 1
+
+object A {
+    val a = 1
+
+    // val prop3: 1
+    val prop3 = A.a
+
+
+    // val prop4: 2
+    val prop4 = A.a + 1
+}
+
+fun foo() {
+    // val prop5: 1
+    val prop5 = A.a
+
+    // val prop6: 2
+    val prop6 = A.a + 1
+
+    val b = {
+        // val prop11: 1
+        val prop11 = A.a
+
+        // val prop12: 2
+        val prop12 = A.a + 1
+    }
+
+    val c = object: Foo {
+        override fun f() {
+            // val prop9: 1
+            val prop9 = A.a
+
+            // val prop10: 2
+            val prop10 = A.a + 1
+        }
+    }
+}
+
+trait Foo {
+    fun f()
+}