add NOTICE file, reference CoC in contribution guidelines, add licenses folder for external licenses

Signed-off-by: Raphael Sonabend <raphaelsonabend@gmail.com>

CONTRIBUTING.md

@@ -49,10 +49,10 @@ python cognee/cognee/tests/test_library.py
 
 ```shell
 # Add your changes to the staging area:
-git add . 
+git add .
 
-# Commit changes with an adequate description: 
+# Commit changes with an adequate description:
-git commit -m "Describe your changes here" 
+git commit -m "Describe your changes here"
 
 # Push your feature branch to your forked repository:
 git push origin feature/your-feature-name
@@ -73,7 +73,7 @@ The project maintainers will review your work, possibly suggest improvements, or
 
 ## 5. 📜 Code of Conduct
 
-Ensure you adhere to the project's Code of Conduct throughout your participation.
+Ensure you adhere to the project's [Code of Conduct](https://github.com/topoteretes/cognee/blob/main/CODE_OF_CONDUCT.md) throughout your participation.
 
 ## 6. 📫 Contact
 

NOTICE.md

@@ -0,0 +1,10 @@
+topoteretes - cognee
+Copyright © 2024 Topoteretes UG. (haftungsbeschränkt), Schonehauser Allee 163, Berlin.
+
+This project includes software developed at Topoteretes UG. (https://www.cognee.ai/).
+
+<!-- Add software from external sources that you used here. e.g.
+
+This project redistributes code originally from <website>.
+
+ -->

licenses/README.md

@@ -0,0 +1,4 @@
+# Third party licenses
+
+This folder contains the licenses of third-party open-source software that has been redistributed in this project.
+Details of included files and modifications can be found in [NOTICE](/NOTICE.md).