🆕 docs: Add new README.md in docs folder with updated disclaimer
The README.md file has been updated to reflect the current status of the project. The project is no longer maintained by Mattermost and has transitioned to being fully community supported. The contribution guidelines have been updated to encourage the community to fork this repository for continued development and contributions. A new README.md file has been added in the docs folder to provide the updated disclaimer in a more prominent location. This change is necessary to keep the community informed about the project's status and how they can contribute moving forward.
