Setup Github Actions to deploy code in public folder

[yaaax]

My local command is currently :

rm -rf ./public &&
npm install &&
hugo &&
rsync -rpzv -e 'ssh -p12022' ./public/ [username]@[XXX.XXX.XXX.XXX]:/home/ecoindex.neutral.hosting/public_html/

(username and IP hidden)

⚠️ Please do not use hugo minify. It will be done in the code. At the moment it breaks UI like this ("- " before each menu item) :

[vvatelot]

closed by #117