feat: migrate Hugo Bootstrap theme to latest Hugo with Tailwind CSS and refactor codebase

* replace Bootstrap-based styling with Tailwind CSS
* update theme compatibility for latest Hugo version
* refactor templates and partials
* fix outdated code and broken components
* improve project structure and maintainability
* optimize styling and frontend build setup

exampleSite/data/theme.json

@@ -0,0 +1,29 @@
+{
+  "colors": {
+    "default": {
+      "theme_color": {
+        "primary": "#E07B7B",
+        "secondary": "#8BC5BF",
+        "tertiary": "#F7F9FF",
+        "body": "#fff",
+        "border": "#eaeaea",
+        "light": "#f6f6f6",
+        "dark": "#040404"
+      },
+      "text_color": {
+        "text": "#9D9EA5",
+        "text_dark": "#00113E",
+        "text_light": "#fff"
+      }
+    }
+  },
+  "fonts": {
+    "font_family": {
+      "primary": "Josefin+Sans:wght@300;400;600",
+      "primary_type": "sans-serif",
+      "secondary": "Montserrat:wght@400;600",
+      "secondary_type": "sans-serif"
+    },
+    "font_size": { "base": "16", "scale": "1.25" }
+  }
+}