Add comprehensive documentation for SnapForm features and workflows

- Introduced new guides for Depth Plane, Surface, and animation workflows.
- Added installation instructions and FAQs to assist users in setup and troubleshooting.
- Created a quick-start guide for first-time users to convert images to Depth Planes.
- Documented the process for removing backgrounds from images.
- Established a models and storage section to clarify data management.
- Included a stylesheets file for improved documentation styling.
- Updated mkdocs configuration for better navigation and theme settings.

pyproject.toml

@@ -8,7 +8,14 @@ license = "GPL-3.0-or-later"
 dependencies = ["blendjob"]
 
 [dependency-groups]
-dev = ["numpy", "pillow", "pytest"]
+dev = [
+    "mike>=2.1.3,<3",
+    "mkdocs>=1.6.1,<2",
+    "mkdocs-material>=9.6.16,<10",
+    "numpy",
+    "pillow",
+    "pytest",
+]
 
 [tool.uv]
 package = false