Refactor Site Builder Integration and Update Docker Configuration

- Merged the site builder functionality into the main app, enhancing the SiteBuilderWizard component with new steps and improved UI.
- Updated the Docker Compose configuration by removing the separate site builder service and integrating its functionality into the igny8_sites service.
- Enhanced Vite configuration to support code-splitting for builder routes, optimizing loading times.
- Updated package dependencies to include new libraries for state management and form handling.

sites/src/index.css

@@ -1,29 +1,28 @@
 :root {
-  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
-  line-height: 1.5;
-  font-weight: 400;
-
-  color-scheme: light dark;
-  color: rgba(255, 255, 255, 0.87);
-  background-color: #242424;
-
+  font-family: 'Inter', 'Inter var', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+  color: #0f172a;
+  background-color: #f5f7fb;
   font-synthesis: none;
   text-rendering: optimizeLegibility;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
 }
 
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
 body {
   margin: 0;
-  display: flex;
-  place-items: center;
-  min-width: 320px;
-  min-height: 100vh;
+  background: #f5f7fb;
 }
 
-#root {
-  width: 100%;
-  margin: 0 auto;
-  text-align: center;
+button {
+  font-family: inherit;
 }
 
+a {
+  color: inherit;
+}