Projection to closed curves

[Florent-Michel]

Addition of classes for closed curves with a projection method.

[ninamiolane]

@Florent-Michel do you have updates on this? :D

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[Florent-Michel]

Hi @ninamiolane, sorry for the delay, I just wrote the unit tests related to this PR. However, when I tried to update my branch with git rebase upstream/master as said in the "Contributing" page, it created a lot of commits, which made the PR a bit messy.

[nguigs]

Hi @ninamiolane, sorry for the delay, I just wrote the unit tests related to this PR. However, when I tried to update my branch with git rebase upstream/master as said in the "Contributing" page, it created a lot of commits, which made the PR a bit messy.

Hi @Florent-Michel, I've created a new branch and cherry-picked your commits only so that we can review your PR properly in #1053. If you want to edit it, you can pull the branch with

git checkout -b Florent-curves-new master
git pull https://github.com/nguigs/geomstats.git florent-curves-clean

and then open a new PR.
If something is missing on the new branch, let me know.

[Florent-Michel]

Thanks @nguigs, I pulled the branch, edited it and opened a new PR.