PPA for KiCad: 5.0 releases

This ppa provide releases build for KiCad 5.0 branch.

To use it:

sudo add-apt-repository ppa:js-reynaud/kicad-5
sudo apt-get update
sudo apt install kicad
to have a full install:
sudo apt install --install-suggests kicad

For Linux Mint user you should use:
sudo apt install --install-recommends --install-suggests kicad
as default Mint configuration don't install recommends packages by default.

If you don't do a "full installation" you should be interested to install also:
- kicad-libraries: a virtual package that will recommend you to install footprints, symbols, templates and 3D
- kicad-symbols, kicad-templates, kicad-footprints, kicad-packages3d: if you want to manually select what library to install.
- kicad-locale-XX: locales for your language (XX is your contry code. see apt search kicad-locale to find available languages)
- kicad-doc-XX: documentation in your language. Same remark than kicad-locale-XX

** If you are using daily build AND want to stay in 5.0: **
You must remove daily build ppa from your sources and remove any existing kicad packages before installing any 5.0 version.
Keep in mind that daily build package will be always more recent than any release packages.