Update documentation and improve changelog

The provided modifications involve an update to the .gitlab-ci.yml file to include a footer text in the project documentation. There's also an additional point added to the CHANGELOG.md file under the 'study participants' section for clarity. Furthermore, the README.md has been slightly restructured to explicitly mention the availability of extensive project details in the documentation.

.gitlab-ci.yml

@@ -18,7 +18,7 @@ pages:
     - apt-get install -y python3-dev python3-pip graphviz graphviz-dev
     - pip install pdoc
     - pip install ".[rl]"
-    - pdoc --output-dir public cooperative_cuisine !cooperative_cuisine.reinforcement_learning --logo https://gitlab.ub.uni-bielefeld.de/uploads/-/system/project/avatar/6780/Cooking-Vector-Illustration-Icon-Graphics-4267218-1-580x435.jpg --docformat google --favicon overcooked-simulator/cooperative_cuisine/pygame_2d_vis/images/favicon.ico footer-text "Developed@[SCS](https://scs.techfak.uni-bielefeld.de/)"
+    - pdoc --output-dir public cooperative_cuisine !cooperative_cuisine.reinforcement_learning --logo https://gitlab.ub.uni-bielefeld.de/uploads/-/system/project/avatar/6780/Cooking-Vector-Illustration-Icon-Graphics-4267218-1-580x435.jpg --docformat google --favicon overcooked-simulator/cooperative_cuisine/pygame_2d_vis/images/favicon.ico --footer-text "Developed@[SCS](https://scs.techfak.uni-bielefeld.de/)"
   artifacts:
     paths:
       - public

CHANGELOG.md

@@ -41,6 +41,7 @@ study server, 2D visualization, etc.
   visualization, study
 - Game server that handles active environments
 - Study environment with study server and study config. Does the match making
+- For study participants: simple control tutorial, recipe guides, end screen.
 - Controller support
 
 ### Security

README.md

@@ -7,9 +7,11 @@
 
 # Cooperative Cuisine Environment
 
-[Documentation](https://scs.pages.ub.uni-bielefeld.de/cocosy/overcooked-simulator)
-
 The overcooked-like cooperative cuisine environment for real-time human cooperative interactions and artificial agents.
+
+For an extensive introduction, have a look at
+the [Documentation](https://scs.pages.ub.uni-bielefeld.de/cocosy/overcooked-simulator).
+
 <div align="center">
 <img src="cooperative_cuisine/pygame_2d_vis/images/cooperative_cuisine.png"  width="800">
 </div>