[Roadmap] Improve Modules section

In general

Modules shat section should always take care of presenting 2 different use cases:

• I build something in my module that is loaded and rendered outside of PrestaShop (like a new BO page)
• I decorate / extend an existing page of PrestaShop, then some constraints apply

We should provide clear pages about “OK, you want to customize BO page Z ? add a block there and a field in this form? Here is the path you should follow, what to look for…”

Roadmap

• Introduction ✅
• Getting started ✅

Extension concepts

• JS events on FO 🔴
• Routing 🔴
• Controllers
  • Front Controllers 🟠
  • Admin Symfony Controllers 🟠
  • Admin Legacy Controllers 🔴
• Hooks 🟠
  …
• Payment modules 🟠
• Carrier modules 🟠
• Testing ✅
• Core changes ✅
• Selling your modules ➡️ removed in doc 8.x
• Sample modules 🟠

Related questions

• https://github.com/PrestaShop/docs/issues/1204

✅ = quite complete (although can always be improved)
🟠 = can be improved
🔴 = does not exist

Start by reviewing the current Modules documentation and the related issue #1204. Identify one missing extension-concept topic and define the page path and guidance needed for the two use cases; done means the selected roadmap item has a clear, actionable documentation page.