Insert imports on copy/paste

Introduce KotlinCopyPasteReferenceProcessor

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

@@ -0,0 +1,12 @@
+package to
+
+import java.JavaClass
+import java.JavaClass.staticMethod
+import java.JavaClass.NestedClass
+
+fun f(c: JavaClass) {
+    staticMethod()
+    c.method()
+    c.InnerClass()
+    NestedClass()
+}