TASK: Refactor controller to not use static fusion path

[daniellienert]

The fusion path is now dynamically determined by controller / action This enables additional actions with separate templates for that controller.

[Sebobo]

Probably also a rebase is needed here to make e2e tests work again.

[markusguenther]

Also rebased this change and make it work with the latest state.

[mhsdesign]

Im not super sure that the fusion contents are 1 to 1 the same ... aaand we have to remember when upmerging to use the new 9.0 configuration

[grebaldi]

@mhsdesign:

so instead i would propose to incorporate this cleanup into the mentioned pr or wait for it to be merged and target 9.0

I'd be fine with targetting 9.0, but I would propose to merge this PR first. Then I can rebase https://github.com/neos/neos-ui/pull/3682 on 9.0 and incorporate the change accordingly.

[mhsdesign]

I would propose to merge this PR first

i only agree with this part ;) So i rebased it onto your pr and this pr targets now feature/multi-app/01-foundation its wayyy easier this way imo ^^

If you agree @grebaldi please just hit the merge button - as https://github.com/neos/neos-ui/pull/3682 is your pr ^^