Add MSH geometry export and preview rendering tools

- Implemented msh_export_obj.py for exporting NGI MSH geometry to Wavefront OBJ format, including model selection and geometry extraction.
- Added msh_preview_renderer.py for rendering NGI MSH models to binary PPM images, featuring a primitive software renderer with customizable parameters.
- Both tools utilize the same NRes parsing logic and provide command-line interfaces for listing models and exporting or rendering geometry.

1 files changed, 2 insertions, 4 deletions

diff --git a/mkdocs.yml b/mkdocs.yml
index 3b24e58..84ff369 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -23,10 +23,8 @@ theme:
 nav:
   - Home: index.md
   - Specs:
-    - NRes / RsLi: specs/nres.md
-    - 3D модели: specs/msh.md
-    - Текстуры и материалы: specs/textures.md
-    - Эффекты и частицы: specs/effects.md
+      - NRes / RsLi: specs/nres.md
+      - Форматы 3D‑ресурсов: specs/msh.md
 
 # Additional configuration
 extra: