Insert imports on copy/paste

Introduce KotlinCopyPasteReferenceProcessor

idea/testData/copyPaste/imports/NoImportForSamePackage.expected.kt

@@ -0,0 +1,20 @@
+package a
+
+import a.E.ENTRY
+import a.Outer.Inner
+import a.Outer.Nested
+import a.Outer.NestedEnum
+import a.Outer.NestedObj
+import a.Outer.NestedTrait
+import a.Outer.NestedAnnotation
+
+fun f(a: A, t: T) {
+    g(A(c).ext())
+    O1.f()
+    O2
+    ENTRY
+}
+
+fun f2(i: Inner, n: Nested, e: NestedEnum, o: NestedObj, t: NestedTrait, a: NestedAnnotation) {
+    ClassObject
+}