Highlighting: Add line markers for suspend function calls in coroutines

#KT-14689 Fixed

idea/testData/codeInsight/lineMarker/suspendCall/suspendCall.kt

@@ -0,0 +1,7 @@
+suspend fun fff() {
+
+}
+
+suspend fun ggg() {
+    return <lineMarker descr="Suspend function call">fff</lineMarker>()
+}