deploy to the AUR

[bouteillerAlan]

Create PKGBUILD file for deploying into the AUR

Todo :

• [x] update the last command with find https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=plasma5-applets-latte-separator#n20
• [x] do the QA
• [x] create the .SRCINFO file (mind the weird stuff about the last commit https://medium.com/@a2nb/submitting-a-package-to-the-aur-e9117d07494d#b3b0)