Implement script instance capturing in script lowering

for regular classes only. Reimplementing the main behavior of the
old BE and implementing few cases on top of it.
#KT-19423 fixed

compiler/testData/codegen/script/scriptInstanceCapturing/enumEntryCapturesProperty.kts

@@ -0,0 +1,11 @@
+// IGNORE_BACKEND: JS, JS_IR, JS_IR_ES6, NATIVE, WASM
+// IGNORE_BACKEND: JVM, JVM_IR
+
+// expected: rv: <nofield>
+
+// KT-30616
+val foo = "hello"
+
+enum class Bar(val s: String) {
+    Eleven(s = foo)
+}