Add more tests in uncommonCases folder

1) dataClass.kt - test with data class
2) receiver.kt - test with Int extension receiver
3) delegation.kt - test with implementation by delegation

compiler/visualizer/testData/uncommonCases/resultFiles/dataClass.kt

@@ -0,0 +1,55 @@
+data class Vector(val x: Int, val y: Int) {
+//                                  Vector
+//                                  │ constructor Vector(Int, Int)
+//                                  │ │      val (Vector).x: Int
+//                                  │ │      │ fun (Int).plus(Int): Int
+//                                  │ │      │ │ Vector.plus.other: Vector
+//                                  │ │      │ │ │     val (Vector).x: Int
+//                                  │ │      │ │ │     │  val (Vector).y: Int
+//                                  │ │      │ │ │     │  │ fun (Int).plus(Int): Int
+//                                  │ │      │ │ │     │  │ │ Vector.plus.other: Vector
+//                                  │ │      │ │ │     │  │ │ │     val (Vector).y: Int
+//                                  │ │      │ │ │     │  │ │ │     │
+    fun plus(other: Vector): Vector = Vector(x + other.x, y + other.y)
+}
+
+fun main() {
+//      Vector
+//      │   constructor Vector(Int, Int)
+//      │   │      Int
+//      │   │      │  Int
+//      │   │      │  │
+    val a = Vector(1, 2)
+//      Vector
+//      │   constructor Vector(Int, Int)
+//      │   │      fun (Int).unaryMinus(): Int
+//      │   │      │Int
+//      │   │      ││  Int
+//      │   │      ││  │
+    val b = Vector(-1, 10)
+
+//  fun io/println(Any?): Unit
+//  │             val main.a: Vector
+//  │             │        val main.b: Vector
+//  │             │        │ fun (Vector).toString(): String
+//  │             │        │ │
+    println("a = $a, b = ${b.toString()}")
+//  fun io/println(Any?): Unit
+//  │                  fun (String).plus(Any?): String
+//  │                  │  val main.a: Vector
+//  │                  │  │ fun (Vector).plus(Vector): Vector
+//  │                  │  │ │ val main.b: Vector
+//  │                  │  │ │ │
+    println("a + b = " + (a + b))
+//  fun io/println(Any?): Unit
+//  │                   val main.a: Vector
+//  │                   │ fun (Vector).hashCode(): Int
+//  │                   │ │
+    println("a hash - ${a.hashCode()}")
+
+//                             val main.a: Vector
+//                             │ fun (Vector).equals(Any?): Boolean
+//  fun io/println(Any?): Unit │ │      val main.b: Vector
+//  │                          │ │      │
+    println("a is equal to b ${a.equals(b)}")
+}