[JVM] Port line number tests to stepping framework.

Allow specifying JVM and JVM_IR as well as shared expectations.

Add the method name to the step.

Discard steps in synthetic methods.

compiler/testData/debug/stepping/anonymousFunction.kt

@@ -0,0 +1,13 @@
+// FILE: test.kt
+
+fun box() {
+    {
+        "OK"
+    }()
+}
+
+// LINENUMBERS
+// test.kt:4 box
+// test.kt:5 invoke
+// test.kt:4 box
+// test.kt:7 box