deprecate: mark ListAllowedValuesCommand as deprecated

The list-allowed-values functionality has been migrated to
metaschema-cli. This deprecates the oscal-cli version with a notice
directing users to the new command location.

The import will be updated from liboscal-java to metaschema-java core
in a follow-up once the metaschema-java dependency is updated.

Author: david-waltermire

src/main/java/dev/metaschema/oscal/tools/cli/core/commands/ListAllowedValuesCommand.java

@@ -63,7 +63,12 @@
 /**
  * A CLI command that provides a listing of allowed values constraints by
  * targeted node.
+ *
+ * @deprecated Use the {@code list-allowed-values} command in
+ *             {@code metaschema-cli} instead. This command will be removed in a
+ *             future release.
  */
+@Deprecated(since = "3.0.0")
 @SuppressWarnings("PMD.CouplingBetweenObjects")
 public class ListAllowedValuesCommand
     extends AbstractTerminalCommand {
@@ -89,7 +94,8 @@ public String getName() {
 
   @Override
   public String getDescription() {
-    return "List allowed values constraints for the provided Metaschema module";
+    return "[Deprecated: use metaschema-cli list-allowed-values] "
+        + "List allowed values constraints for the provided Metaschema module";
   }
 
   @SuppressWarnings("null")