Move: Use Kotlin declaration mover to handle KtFile

IDEA-provided file mover does not process conflicts

 #KT-13911 Fixed

idea/testData/refactoring/moveHandler/declarations/fileAndTopLevelDeclarations/test.kt

@@ -0,0 +1,7 @@
+class <caret>A
+
+fun <caret>foo() {
+
+}
+
+val <caret>bar = 1

idea/testData/refactoring/moveHandler/declarations/fileAndTopLevelDeclarations/test2.kt

@@ -0,0 +1,7 @@
+class A2
+
+fun foo2() {
+
+}
+
+val bar2 = 1