chore: init docs

docs/user_guide/creating_using_components/middleware.md

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+# Setting Up `ComponentDependencyMiddleware`
+
+[`ComponentDependencyMiddleware`][django_components.middleware.ComponentDependencyMiddleware] is a Django middleware designed to manage and inject CSS/JS dependencies for rendered components dynamically. It ensures that only the necessary stylesheets and scripts are loaded in your HTML responses, based on the components used in your Django templates.
+
+To set it up, add the middleware to your [`MIDDLEWARE`][] in settings.py:
+
+```python
+MIDDLEWARE = [
+    # ... other middleware classes ...
+    'django_components.middleware.ComponentDependencyMiddleware'
+    # ... other middleware classes ...
+]
+```
+
+Then, enable `RENDER_DEPENDENCIES` in setting.py:
+
+```python
+COMPONENTS = {
+    "RENDER_DEPENDENCIES": True,
+    # ... other component settings ...
+}
+```