create a bfast gpu module

[12rambau]

What is the name of your repository ?
https://github.com/12rambau/bfast_gpu

The name of your dashboard app
bfast GPU

A short description of the app
GPU implementation of the BFAST algorithm to analyse time series

Is your module requiring a GEE account ?
yes

Any comment you want to add
adding @lecrabe to notify him when the app will be ready on the dashboard. As usual, release branch on prod and master on test env. The doc will be added automatically when the issue will be closed (ref https://github.com/openforis/sepal-doc/pull/20)

maintainer checklist

• [x] Name is set
• [x] Description set
• [x] Comprehensive README
• [x] 3 languages documentation files (can be empty)
• [x] The module works with the default available Python libs
• [x] Existence of a release branch
• [x] check behaviour

[cdanielw]

Done