Move Declarations: Add intention which moves top-level declaration to the separate file in the same directory and package

#KT-4936 Fixed

idea/resources/intentionDescriptions/MoveDeclarationToSeparateFileIntention/before.kt.template

@@ -0,0 +1,10 @@
+// File: foo/bar/myFile.kt
+package foo.bar2
+
+<spot>class Test</spot> {
+
+}
+
+fun test() {
+
+}