Split GDExtension category

Co-authored-by: Lukas Tenbrink <[email protected]>

Author: tetrapod00

tutorials/scripting/gdextension/index.rst

@@ -8,7 +8,34 @@ GDExtension
    :name: toc-tutorials-gdnative
 
    what_is_gdextension
-   gdextension_cpp_example
-   gdextension_c_example
    gdextension_file
+
+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
+
+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