Review Architecture Diagram(s) and adjust if changes where made in the past year

[leonardpahlke]

I noticed that the architecture diagram was not updated for a while. Is it still up to date?

It might be worthwhile to expand the architecture

1. Overview architecture (something we can show to "anybody" at say kubecon to transport the project idea
2. More detailed architecture we run now (like the one we have right now)
3. The architecture we would like to run (something that includes LFX, perhaps queues, more exporters, multiple repositories and ways to trigger the pipeline)
4. (if applicable) a architecture that shows the dev flow (around dagger)

cc @nikimanoledaki @AntonioDiTuri @rossf7