Add VSMX bytecode interpreter

- VsmxInterpreter: stack machine executing all 74 VSMX opcodes
  (arithmetic, comparisons, bitwise, jumps, calls, arrays, objects).
- Object model: VsmxBaseObject/Undefined/Null/Boolean/Number/String/
  Object/Array/Function/Reference/LocalVarReference/Method/CallState/
  NativeObject, plus BaseNativeObject for future native objects.
- CLI 'rco' now runs the menu script headlessly and prints the 172
  resulting global variables (state, chapter/language config, focus).
- Validated against Batman Begins: script runs with zero unimplemented-
  opcode warnings and defines all menu functions (on_cancel, mm_on_push,
  trans_to_play, play_movie_beginning, ...).

cli/src/main/java/dev/quoije/umd/cli/Main.java

@@ -11,6 +11,9 @@ import dev.quoije.umd.player.PlaybackEngine;
 import dev.quoije.umd.playlist.Playlist;
 import dev.quoije.umd.rco.RcoFile;
 import dev.quoije.umd.rco.vsmx.Vsmx;
+import dev.quoije.umd.rco.vsmx.interpreter.VsmxBaseObject;
+import dev.quoije.umd.rco.vsmx.interpreter.VsmxInterpreter;
+import dev.quoije.umd.rco.vsmx.interpreter.VsmxObject;
 import dev.quoije.umd.sfo.Sfo;
 
 import java.io.ByteArrayOutputStream;
@@ -414,13 +417,23 @@ public final class Main {
                 Vsmx vsmx = new Vsmx(vsmxData, "menu");
                 System.out.printf("vsmx: %d code groups, %d texts, %d props, %d names%n",
                         vsmx.codes().length, vsmx.texts().length, vsmx.properties().length, vsmx.names().length);
-                List<String> lines = vsmx.disassemble();
-                int shown = Math.min(lines.size(), 100);
-                for (int i = 0; i < shown; i++) {
-                    System.out.println("  " + lines.get(i));
+
+                VsmxInterpreter interpreter = new VsmxInterpreter();
+                interpreter.setVsmx(vsmx);
+                VsmxObject globals = new VsmxObject(interpreter, null);
+                interpreter.run(globals);
+
+                System.out.printf("global variables (%d):%n", globals.getPropertyNames().size());
+                for (String varName : globals.getPropertyNames()) {
+                    VsmxBaseObject value = globals.getPropertyValue(varName);
+                    System.out.printf("  %s = %s%n", varName, value);
                 }
-                if (lines.size() > shown) {
-                    System.out.printf("  ... (%d more lines)%n", lines.size() - shown);
+
+                if (!interpreter.getWarnings().isEmpty()) {
+                    System.out.printf("warnings (%d):%n", interpreter.getWarnings().size());
+                    for (String warning : interpreter.getWarnings()) {
+                        System.out.println("  " + warning);
+                    }
                 }
             }
         }