Adapt offering publication form to be prefilled externally by the AI Ops app

[xamcost]

Hi there! In Sedimark, users will have access to an application to create AI pipelines. In order to facilitate the sharing of these pipelines through the marketplace, the goal of this issue is to adapt its frontend to be able to receive data from the AI Ops app to prefill the offering publication wizard with relevant data about the pipeline offering to be published. So far, the scenario we discussed with AI Ops developers is that on their side, they add a Publish pipeline button to their UI, which would redirect to the marketplace frontend publication form, prefilled (of course, any feedback welcome on this).

So to address this issue, we need to:

• list data to prefill about the pipeline offering (a default name, the URL where its files can be fetched, other params the fetching request may need like headers, ...)
• create a mechanism in the frontend to receive the data to prefill (using URL params, or maybe an API route, ...)
• refactor the offering publication wizard to put all its steps in a single page. This will actually simplify its management! To do this, I would suggest simply replacing the wizard steps 1, 2 and 3 by an accordion structure. Let's ignore step 4 for now (review and submit).