Split general godot-cpp, general GDExtension info and GDExtension internals into separate categories.

tutorials/scripting/gdextension/godot_cpp/index.rst

@@ -0,0 +1,13 @@
+:allow_comments: False
+
+C++ (godot-cpp)
+===============
+
+This section describes how to get started with `godot-cpp <https://github.com/godotengine/godot-cpp>`__, the official C++ GDExtension bindings maintained as part of the Godot project.
+
+.. toctree::
+   :maxdepth: 1
+   :name: toc-tutorials-godot-cpp
+
+   gdextension_cpp_example
+   gdextension_docs_system

tutorials/scripting/gdextension/index.rst

@@ -5,10 +5,9 @@ GDExtension
 
 .. toctree::
    :maxdepth: 1
-   :name: toc-tutorials-gdnative
+   :name: toc-tutorials-gdextension
 
    what_is_gdextension
-   gdextension_cpp_example
-   gdextension_c_example
    gdextension_file
-   gdextension_docs_system
+   godot_cpp/index
+   internals/index

tutorials/scripting/gdextension/internals/index.rst

@@ -0,0 +1,14 @@
+:allow_comments: False
+
+GDExtension Internals
+=====================
+
+This section is aimed at people who want to make a new GDExtension from scratch. This is mainly people creating new language bindings.
+
+If you're looking to make a Godot extension with existing language bindings, check out the :ref:`C++ documentation (godot-cpp) <doc_gdextension_docs_system>`, or documentations for :ref:`other languages <doc_what_is_gdextension>` instead.
+
+.. toctree::
+   :maxdepth: 1
+   :name: toc-tutorials-gdextension-internals
+
+   gdextension_c_example