Add custom font styles and theme enhancements

- Created a new CSS file for font imports and defined font families for base, mono, strong, em, and h1 elements.
- Added a new JavaScript file to extend the default VitePress theme, incorporating a custom layout and a Vue component for enhanced functionality.
- Integrated Mermaid diagram support and included the necessary styles for it.

.obsidian/plugins/odox/data.json

@@ -0,0 +1,8 @@
+{
+  "docsPath": "openwiki/docs",
+  "assetsPath": "openwiki/public",
+  "nestInFolder": false,
+  "preserveFolderStructure": true,
+  "transparentCanvas": true,
+  "canvasEmbedTemplate": "<Viewer src=\"{url}\" />"
+}