[Fix] (MG_Backend/DirectVulkan): support Voxy rendering

Implemented:

- Advertise Voxy-required DirectVulkan extensions without raising the reported OpenGL version.

- Add DirectVulkan compute, indirect draw count, DSA, readback, and buffer state paths needed by Voxy.

Fixed:

- Enable Vulkan shaderInt64 and drawIndirectFirstInstance so Voxy baseInstance-driven LOD draws address the correct section data.

- Fix DirectVulkan synchronization, framebuffer, texture readback, and shader interface handling used by Voxy and Minecraft screenshots.

Tests:

- Add MG_Test coverage for DirectVulkan extension advertising, DSA buffer/texture/framebuffer/vertex-array behavior, persistent mapped readback, and shader/program paths.

MobileGL/MG_Util/Texture/TextureFormatProcessor.cpp

@@ -178,6 +178,7 @@ namespace MobileGL::MG_Util::TextureFormatProcessor {
                 break;
 
             // Depth Stencil
+            case GL_DEPTH24_STENCIL8:
             case GL_DEPTH32F_STENCIL8:
             case GL_DEPTH_STENCIL:
                 *outFormat = GL_DEPTH_STENCIL;
@@ -332,9 +333,12 @@ namespace MobileGL::MG_Util::TextureFormatProcessor {
 
             // Depth Stencil
             case GL_DEPTH32F_STENCIL8:
-            case GL_DEPTH_STENCIL:
                 *outType = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
                 break;
+            case GL_DEPTH24_STENCIL8:
+            case GL_DEPTH_STENCIL:
+                *outType = GL_UNSIGNED_INT_24_8;
+                break;
 
             default:
                 MGLOG_E("NormalizePixelFormat: outType: unhandled internalFormat: %s",
@@ -345,4 +349,4 @@ namespace MobileGL::MG_Util::TextureFormatProcessor {
             }
         }
     }
-} // namespace MobileGL::MG_Util::TextureFormatProcessor
+} // namespace MobileGL::MG_Util::TextureFormatProcessor