added images and text to describe infrastructure

[Epsot]

Description

I added the image and wrote some text to explain it in a markdown file in english and french. I'm not sure if there are other steps I need to take

[SonOfLope]

@Epsot what did you use for your diagrams ? is there a way to also provide a backup raw file from what you used in case we need to update the diagram ?

[SonOfLope]

Added @Simon-Boyer to review diagram

[SonOfLope]

@Epsot can you also update navigation in mkdocs config file (en and fr) to link to it. Should be in Plateforme Cedille section. The readme in wiki folder explains how to test locally.

[Epsot]

@Epsot what did you use for your diagrams ? is there a way to also provide a backup raw file from what you used in case we need to update the diagram ?

I used Lucidchart. I don't think I can get a raw file from them. The only thing I could get is a link for people to modify it, but the diagram would still be hosted in my account.

[SonOfLope]

@Epsot then i would suggest using something that does allow for future editing. Something like excalidraw or else.