refactor: rename modules and update migration docs

BREAKING CHANGE
Module paths moved to `github.com/HugoBlox/kit` with new names:
- core `blox-tailwind` → `blox`
- analytics → `analytics`
- netlify → `integrations/netlify`
- slides (reveal) → `slides`
Update go.mod, module.yaml/params, scripts, tests, and v0.11 migration guide accordingly.

modules/blox/assets/css/components/charts.css

@@ -0,0 +1,21 @@
+/* Mermaid.js diagram div */
+div.mermaid {
+  width: 100%;
+  margin-bottom: 1rem;
+
+  svg {
+    margin-left: auto;
+    margin-right: auto;
+  }
+}
+
+/* Plotly chart */
+div.chart {
+  max-width: 100%;
+  margin-left: auto;
+  margin-right: auto;
+  margin-bottom: 1rem;
+
+  /* Add horizontal scroll on mobile since Plotly */
+  overflow-x: auto;
+}