Evaluator: Allow to evaluate expression on synthetic lines in .kt files

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.kt

@@ -0,0 +1,18 @@
+package dataClassCopy
+
+fun main() {
+    val a = Foo("foo")
+    //Breakpoint!
+    a.copy("bar")
+}
+
+data class Foo(val a: String)
+
+// STEP_INTO: 1
+// STEP_OUT: 1
+
+// EXPRESSION: Foo("baz")
+// RESULT: instance of dataClassCopy.Foo(id=ID): LdataClassCopy/Foo;
+
+// EXPRESSION: a
+// RESULT: Unresolved reference: a

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/dataClassCopy.out

@@ -0,0 +1,10 @@
+LineBreakpoint created at dataClassCopy.kt:6
+Run Java
+Connected to the target VM
+dataClassCopy.kt:6
+dataClassCopy.kt:9
+dataClassCopy.kt:-1
+Compile bytecode for Foo("baz")
+Disconnected from the target VM
+
+Process finished with exit code 0