JetPositionManager: add tests

idea/testData/debugger/anonymousNamedFunction.kt

@@ -0,0 +1,7 @@
+package insertInBlock
+
+fun foo() {
+    val lambda = {
+        val a = 1 // insertInBlock/InsertInBlockPackage$foo$lambda$1
+    }()
+}

idea/testData/debugger/functionLiteral.kt

@@ -0,0 +1,10 @@
+class A {
+    fun foo() {
+        {
+            fun innerFoo() {
+                ""   // A$foo$1$1
+            }
+            innerFoo()
+        }()
+    }
+}

idea/testData/debugger/functionLiteralInVal.kt

@@ -0,0 +1,10 @@
+class A {
+    fun foo() {
+        val a = {
+            fun innerFoo() {
+                val b = {}   // A$foo$a$1$1
+            }
+            innerFoo()
+        }()
+    }
+}

idea/testData/debugger/propertyInitializer.kt

@@ -0,0 +1,3 @@
+class A {
+    val foo: Int = 5   // A
+}

idea/testData/debugger/topLevelPropertyInitializer.kt

@@ -0,0 +1,3 @@
+package prop
+
+val foo: Int = 5   // prop/PropPackage-topLevelPropertyInitializer