[codeInsight] IDEA-237506 Provide quick-fix to make class public/protected for class which is generic parameter class

This patch clean up the code after the review, it includes:

- removing ChangeVisibilityModificatorTest since there is a more common
test that is called ModifierTest
- moving the ChangeVisibilityModificatorTest test's data to a different
directory to for ModifierTest to be able to discover it

Signed-off-by: Nikita Eshkeev <nikita.eshkeev@jetbrains.com>

GitOrigin-RevId: cb789378cebabb180558fcd4573aa2605f371134

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/modifier/afterChangeVisibilityModificatorToProtectedForInner.java

@@ -0,0 +1,8 @@
+// "Make 'Item' protected" "true"
+
+import java.util.ArrayList;
+
+class GenericImplementsPrivate extends ArrayList<GenericImplementsPrivate.Item> {
+  protected class Item {
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/modifier/afterChangeVisibilityModificatorToPublicForInner.java

@@ -0,0 +1,8 @@
+// "Make 'Item' public" "true"
+
+import java.util.ArrayList;
+
+class GenericImplementsPrivate extends ArrayList<GenericImplementsPrivate.Item> {
+  public class Item {
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/modifier/beforeChangeVisibilityModificatorToProtectedForInner.java

@@ -0,0 +1,8 @@
+// "Make 'Item' protected" "true"
+
+import java.util.ArrayList;
+
+class GenericImplementsPrivate extends ArrayList<caret><GenericImplementsPrivate.Item> {
+  private class Item {
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/modifier/beforeChangeVisibilityModificatorToPublicForInner.java

@@ -0,0 +1,8 @@
+// "Make 'Item' public" "true"
+
+import java.util.ArrayList;
+
+class GenericImplementsPrivate extends ArrayList<caret><GenericImplementsPrivate.Item> {
+  private class Item {
+  }
+}