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/integrations/netlify/README.md

@@ -0,0 +1,28 @@
+# Hugo Plugin for Netlify
+
+A build plugin to integrate your Hugo site seamlessly with Netlify.
+
+The plugin automatically generates a `_headers` and `_redirects` file at the root of the public folder to configure [HTTP headers](https://www.netlify.com/docs/headers-and-basic-auth/) and [redirects](https://www.netlify.com/docs/redirects/) on Netlify.
+
+By default, the plugin will help secure your site with some common security headers. You can easily add or replace headers through the plugin config.
+
+## Install
+
+1. Edit `config/_default/config.yaml` to install the Netlify integration module:
+
+   ```yaml
+   module:
+     imports:
+       - path: github.com/HugoBlox/kit/modules/integrations/netlify
+   ```
+
+2. Tell Hugo to generate the Netlify `headers` and `redirects` files by adding them to Hugo's `outputs` config. For example,
+
+   ```yaml
+   outputs:
+     home: [..., headers, redirects]
+   ```
+
+## Configure
+
+- 📚 [View the **documentation**](https://docs.hugoblox.com/hugo-tutorials/security/)