create repo for heroku app to collect students notebook grades

[buedaswag]

create repo for https://github.com/LDSSA/ds-prep-course-2021/issues/10

[InesPessoa]

@buedaswag I also tried to create a repository, but I guess that I don't have permission for that. I can not conclude the process.

[buedaswag]

thanks Inês! here it is: https://github.com/LDSSA/nb-grades-collector

[buedaswag]

development phases:

• heroku app that receives a curl request with email, slack id, grade
  • stores email, slack id, most recent grade, top grade
• get the grade from the students notebook so that we can send it
• (optional) implement student authentication

how to get slack id: https://moshfeu.medium.com/how-to-find-my-member-id-in-slack-workspace-d4bba942e38c

[buedaswag]

in this repo we have how we grade students's notebooks: https://github.com/LDSSA/ldsagrader/tree/master/ldsagrader