add pipenv file

[Trafitto]

I hope it goes well, I had never used pipenv #5

[treuille]

Thanks for the pull request @Trafitto ! Very cool!

Before this can be approved can you please:

1. Resolve the code comment changes.
2. Indicate how you tested the correctness of this pipfile (for example by creating a clean virtual environment and using it to install dependencies)
3. Wait for a code review by @monchier.

Note to @monchier : Do you think we even need this pipfile? Please be honest!

[monchier]

Thanks for the PR @Trafitto! Please address the comments.

[Trafitto]

Ok, I make the requested changes

[treuille]

Can you please:

1. Make @monchier's changes.
2. Remove the Pipfile.lock

Then I will approve the PR. Thanks, @Trafitto ! ❤️

[Trafitto]

I made the requested changes.

Here are the steps to create pipenv:
pipenv shell
pipenv install streamlit
pipenv opencv-python
Use pipenv check for checking the pipfile
Use pipenv install for installing all dependencies

[monchier]

A couple more edits.

[monchier]

Is not 0.47.0 enough for this to work?

[Trafitto]

Is the version suggested by @treuille

Streamlit version must be at least 0.47.4

[monchier]

Thanks a lot for your contribution @Trafitto !!! Looks good to me.

[treuille]

LGTM

[treuille]

Congratulations on your first merge to the repo @Trafitto!

[Trafitto]

Thanks 👍