docs: Syntax highlighting for mkdocs (#984)

* feat:forward context processors variables in context in ISOLATED mode

	provide context_processors_data property to Component to access those variables in Component

* refactor: internalize RequestContext and pass HttpRequest internally

* docs: document HttpRequest and context processors

* docs: use djc_py code blocks for component definitions

---------

Co-authored-by: Lilian Durey <dureylilian@gmail.com>

docs/concepts/advanced/authoring_component_libraries.md

@@ -105,7 +105,7 @@ For live examples, see the [Community examples](../../overview/community.md#comm
 
     It's also a good idea to have a common prefix for your components, so they can be easily distinguished from users' components. In the example below, we use the prefix `my_` / `My`.
 
-    ```py
+    ```djc_py
     from typing import Dict, NotRequired, Optional, Tuple, TypedDict
 
     from django_components import Component, SlotFunc, register, types

docs/concepts/advanced/html_tragments.md

@@ -106,7 +106,7 @@ Then navigate to these URLs:
 
 ### 1. Define document HTML
 
-```py title="[root]/components/demo.py"
+```djc_py title="[root]/components/demo.py"
 from django_components import Component, types
 
 # HTML into which a fragment will be loaded using HTMX
@@ -141,7 +141,7 @@ class MyPage(Component):
 
 ### 2. Define fragment HTML
 
-```py title="[root]/components/demo.py"
+```djc_py title="[root]/components/demo.py"
 class Frag(Component):
     def get(self, request):
         return self.render_to_response(
@@ -184,7 +184,7 @@ urlpatterns = [
 
 ### 1. Define document HTML
 
-```py title="[root]/components/demo.py"
+```djc_py title="[root]/components/demo.py"
 from django_components import Component, types
 
 # HTML into which a fragment will be loaded using AlpineJS
@@ -225,7 +225,7 @@ class MyPage(Component):
 
 ### 2. Define fragment HTML
 
-```py title="[root]/components/demo.py"
+```djc_py title="[root]/components/demo.py"
 class Frag(Component):
     def get(self, request):
         # IMPORTANT: Don't forget `type="fragment"`
@@ -281,7 +281,7 @@ urlpatterns = [
 
 ### 1. Define document HTML
 
-```py title="[root]/components/demo.py"
+```djc_py title="[root]/components/demo.py"
 from django_components import Component, types
 
 # HTML into which a fragment will be loaded using JS
@@ -321,7 +321,7 @@ class MyPage(Component):
 
 ### 2. Define fragment HTML
 
-```py title="[root]/components/demo.py"
+```djc_py title="[root]/components/demo.py"
 class Frag(Component):
     def get(self, request):
         return self.render_to_response(

docs/concepts/advanced/provide_inject.md

@@ -107,7 +107,7 @@ have all the keys that were passed to the `provide` tag.
 
 ## Full example
 
-```py
+```djc_py
 @register("child")
 class ChildComponent(Component):
     template = """

docs/concepts/advanced/rendering_js_css.md

@@ -27,7 +27,7 @@ the locations by inserting following Django template tags:
 
 So if you have a component with JS and CSS:
 
-```python
+```djc_py
 from django_components import Component, types
 
 class MyButton(Component):