Launcher: Downloaded mac version don't work

[HydrolienF]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Download mac version of the installer
2. Launch installer
3. transfer file to app
4. launch Formiko from app

Expected behavior
It should start the game

Desktop (please complete the following information):

• OS: MacOS

TODO

• Launcher: Launcher can't launch java in /opt/... #621
• Add a thanks for downloading page for every OS #628
• Step by step download pages on web site #629
• test that following the tuto it work in virtual mac session
• test on an other mac
• make an other user test on its mac

[HydrolienF]

After a lot of research it appear that having a bloking popup can't be fix other way than having a singing key.
cf logisim-evolution/logisim-evolution#505
But there is a simple command that can fix that, so insted to try to fix it, we will teach the user how to avoid the bloking popup #628 #629

[HydrolienF]

Launcher still fail to launch Java