Setup a github action to manage translations in the desktop app

[gauthierpetetin]

Message from A. Donesky about how they do it in the extension:
"We use a platform called Crowdin. You can set it up to look at a file as a source of your primary language (from which translations will be made). In the case of the extension it's this file. Then we contract an actual translations vendor (we use Blend) who then log into Crowdin and push translations to the platform. Those translation are then batched and pushed to our repo as a PR. There is a github action that can be called to force push to the open PR that will gather any additional translations submitted by the vendors since the previous push. We also have this action run on a daily interval."

Steps:

• Create Crowdin account
• Work on a script to pull from Crowdin
• Automate it on a github action