Debugger: refactor smart step into to use descriptors instead of psi elements (KT-13485)

#KT-13485 Fixed

idea/testData/debugger/tinyApp/src/stepping/custom/smartStepIntoConstructor.kt

@@ -45,6 +45,14 @@ fun main(args: Array<String>) {
     // RESUME: 1
     //Breakpoint!
     N(1)
+    // SMART_STEP_INTO_BY_INDEX: 1
+    // RESUME: 1
+    //Breakpoint!
+    O(1)
+    // SMART_STEP_INTO_BY_INDEX: 1
+    // RESUME: 1
+    //Breakpoint!
+    O(1, "1")
 
 }
 
@@ -100,4 +108,8 @@ class N {
 
     constructor() {
     }
+}
+class O<T>(i: T) {
+    constructor(i: Int, j: T): this(j) {
+    }
 }

idea/testData/debugger/tinyApp/src/stepping/custom/smartStepIntoInterfaceFun.kt

@@ -0,0 +1,28 @@
+// KT-13485
+package smartStepIntoInterfaceFun
+
+interface ObjectFace<T> {
+    fun act()
+    fun act2(t: T)
+}
+
+class ObjectClass : ObjectFace<Int> {
+    override fun act() {
+        println()
+    }
+    override fun act2(t: Int) {
+        println()
+    }
+}
+
+fun main(args: Array<String>) {
+    val simple: ObjectFace<Int> = ObjectClass()
+    // SMART_STEP_INTO_BY_INDEX: 1
+    // RESUME: 1
+    //Breakpoint!
+    simple.act()
+    // SMART_STEP_INTO_BY_INDEX: 1
+    // RESUME: 1
+    //Breakpoint!
+    simple.act2(1)
+}