Missing Gitpod yaml

[jferragut]

@alesanchezr This project doesn't have a gitpod config , so when you close your environment and reload it - the pipenv gets messed up because the wrong python version is installed.

Workaround:

• pipenv --rm
• pipenv install
• pipenv run start

Solution: Create a gitpod.yml so that we can configure the correct version of python and dependencies to load automatically.