[file-router] add explicit config to disable file-router completely #3663
Description
Describe your motivation
According to the docs, having a routes.tsx file under src/main/frontend/ does not disable file router monitoring of the views directory, but the output is ignored. Due having this defaults, the following situation described in the docs is confusing and unnecessarily limiting, thus undesirable:
In this case, the files in src/main/frontend/views are not used for routing, and you should avoid placing any .tsx/.jsx files there, as they are still interpreted as views by the Hilla router, resulting in unnecessary processing and possible confusion.
Describe the solution you'd like
It would be less limiting if there's an explicit switch to turn of the file-router, so that users can have their tsx/jsx files under views directory freely and with less confusion.
Describe alternatives you've considered
No response
Additional context
No response