Description on how to create own extension (#528)

* [TASK] Description on how to create own extension

* [TASK] Remove backticks

---------

Co-authored-by: Kiebele <[email protected]>

Author: mkiebele

Documentation/Extensions/CreateOwnExtension.rst

@@ -0,0 +1,72 @@
+.. include:: /Includes.rst.txt
+
+.. _create-own-extension:
+
+=========================
+Create your own extension
+=========================
+
+In TYPO3, extensions allow you to expand the system’s functionality by
+adding new features and customizing behavior according to your project's needs.
+
+Prerequisites
+=============
+
+*   A working :ref:`TYPO3 installation <t3start:installation-ddev-tutorial>`
+    using Composer.
+*   Familiarity with Composer
+*   Basic knowledge of PHP and TYPO3 development concepts
+*   CLI access to your TYPO3 instance
+
+.. _why-create-extension:
+
+Why create an extension?
+========================
+
+Creating an extension allows you to:
+
+*   Add custom features and modules to TYPO3
+*   Share functionality across multiple TYPO3 instances
+
+
+.. _how-to-create-extension:
+
+How to start developing an extension
+====================================
+
+Developing an extension involves several steps, from setting up the extension
+structure to implementing your custom functionality.
+To guide you through this process, TYPO3 provides a detailed tutorial on
+extension development.
+
+Please refer to this :ref:`link <t3coreapi:extension-tutorials>` for
+comprehensive, step-by-step instructions on how to create an extension.
+
+
+.. _basic-steps:
+
+Basic steps to create an extension
+==================================
+
+*   Define the purpose of your extension.
+
+    Determine what specific functionality or feature you want to add to TYPO3
+
+*   Create the extension skeleton
+
+    Set up the basic structure for your extension.
+
+*   Implement the desired features
+
+    Add the necessary PHP classes, TypoScript configuration and templates
+    that will bring your extension's functionality to life.
+
+*   Register the extension in TYPO3
+
+    Register your extension so TYPO3 can recognize it. This includes adding it
+    to your instance's configuration.
+
+*   Test and refine
+
+    Test your extension to ensure it works as expected and make any needed
+    adjustments.

Documentation/Extensions/Index.rst

@@ -28,6 +28,10 @@ Working With Extensions
         TYPO3 backend and the TYPO3 Extension Repository (TER) without Composer.
         This method of managing extensions is now deprecated.
 
+    ..  card:: :ref:`Create your own extension <create-own-extension>`
+
+        This guide contains information on how to create your own extension.
+
 
 ..  toctree::
     :hidden:
@@ -36,3 +40,4 @@ Working With Extensions
     Management
     Installing Local Extensions <https://docs.typo3.org/m/typo3/tutorial-getting-started/main/en-us/Extensions/Management.html#installing-local-extensions>
     LegacyManagement
+    CreateOwnExtension