Empty Files in documentation folder

[scaphilo]

Describe the bug
The project contains empty documentation files such as Installation.md and Development_Environment_Setup.md

To Reproduce
Read the content of the files in the folder documentation

Expected behavior
These files should contain an information how to install koalixcrm on an a new system respectively how to setup and use the Development Environment.

Additional Information for AI Agent
Analyze the project koalixcrm and write the right text for the Installation.md and the Development Environment Setup md