Add inspection to simplify successive null checks #KT-14799 Fixed

idea/testData/inspectionsLocal/nullChecksToSafeCall/orCase.kt

@@ -0,0 +1,10 @@
+fun main(args: Array<String>) {
+    val a: Testtt? = Testtt()
+    if (a<caret> == null || a.a == null || a.a.a == null || a.a.a.a == null) {
+
+    }
+}
+
+class Testtt {
+    val a: Testtt? = null
+}