Introduce isExpect/ActualDeclaration in KotlinLineMarkerProvider

Treat every member of expect declaration as expect declaration itself
So #KT-18455 Fixed

idea/testData/multiModuleLineMarker/fromCommonToJvmHeader/common/common.kt

@@ -1,5 +1,5 @@
 expect class <lineMarker>Header</lineMarker> {
-    fun foo(): Int
+    fun <lineMarker>foo</lineMarker>(): Int
 }
 
 expect fun <lineMarker>foo</lineMarker>(arg: Int): String

idea/testData/multiModuleLineMarker/fromExpectedSecondaryConstructor/common/common.kt

@@ -1,3 +1,3 @@
 expect class <lineMarker>SecondaryConstructor</lineMarker>{
-    constructor(name: String, surname: String)
+    <lineMarker>constructor</lineMarker>(name: String, surname: String)
 }