Cogment-lab

Added
- Cogment Lab can now be used with Text spaces in Gymnasium
- Added support for gradio-based web UIs

Changed
- Web UI now receives both the observation and the rendered frame
- Web UI can work on http and https

Fixed
- `cogmentlab install` no longer requires root access

Changed
- The `cogmentlab` command now uses the `cogment` executable stored in `$COGMENT_LAB_HOME/cogment`. This might require rerunning `cogmentlab install` or updating the environment variable.

Added
- Added an optional progress bar to data collection, with tqdm as a new dependency

Fixed
- jinja2 is now correctly a dependency

Added
- Added guided tutorial notebooks
- Added an option to customize the orchestrator and datastore ports
- Added ParallelEnvironment as a default export from envs
- Added a placeholder image for the web UI

Fixed
- Updated the uvicorn dependency to require the [standard] option
- Fixed a breaking bug in ParallelEnv
- Fixed some type issues, ignore some spurious warnings

Changed
- Dropped OpenCV as a requirement

Added
- Initial release