Move KtFunctionLiteral.findLabelAndCall from kotlin-ide.frontend-independent to compiler.psi

I want to be able to use this function in `:kotlin-scripting-ide-common` & `frontend-independent`

This commit also allows to remove copy-pasted `findLabelAndCall` in `scripting-ide-services` module

compiler/psi/src/org/jetbrains/kotlin/psi/psiUtil/ktPsiUtil.kt

@@ -546,6 +546,32 @@ fun KtFunctionLiteral.getOrCreateParameterList(): KtParameterList {
     return newParameterList
 }
 
+fun KtFunctionLiteral.findLabelAndCall(): Pair<Name?, KtCallExpression?> {
+    val literalParent = (this.parent as KtLambdaExpression).parent
+
+    fun KtValueArgument.callExpression(): KtCallExpression? {
+        val parent = parent
+        return (if (parent is KtValueArgumentList) parent else this).parent as? KtCallExpression
+    }
+
+    when (literalParent) {
+        is KtLabeledExpression -> {
+            val callExpression = (literalParent.parent as? KtValueArgument)?.callExpression()
+            return Pair(literalParent.getLabelNameAsName(), callExpression)
+        }
+
+        is KtValueArgument -> {
+            val callExpression = literalParent.callExpression()
+            val label = (callExpression?.calleeExpression as? KtSimpleNameExpression)?.getReferencedNameAsName()
+            return Pair(label, callExpression)
+        }
+
+        else -> {
+            return Pair(null, null)
+        }
+    }
+}
+
 fun KtCallExpression.getOrCreateValueArgumentList(): KtValueArgumentList {
     valueArgumentList?.let { return it }
     return addAfter(