Move: Add conflict checking for "Move packages" case

idea/testData/refactoring/moveMultiModule/movePackageToUnrelatedModuleConflict/before/A/A.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

idea/testData/refactoring/moveMultiModule/movePackageToUnrelatedModuleConflict/before/B/B.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

idea/testData/refactoring/moveMultiModule/movePackageToUnrelatedModuleConflict/before/B/src/test2/J.java

@@ -0,0 +1,7 @@
+package test2;
+
+import test2.pack.Foo;
+
+public class J {
+    Foo foo = new Foo();
+}

idea/testData/refactoring/moveMultiModule/movePackageToUnrelatedModuleConflict/before/B/src/test2/pack/Bar.kt

@@ -0,0 +1,8 @@
+package test2.pack
+
+import test2.J
+
+class Bar {
+    internal val foo = Foo()
+    val j = J()
+}

idea/testData/refactoring/moveMultiModule/movePackageToUnrelatedModuleConflict/before/B/src/test2/pack/Foo.kt

@@ -0,0 +1,7 @@
+package test2.pack
+
+import test2.J
+
+internal class Foo {
+    val j = J()
+}