Performance overlay shader frame time measurement should be developer only #1428
Description
The per shader frame times in performance overlay were intended for developer use and exposed to users who now may be misinterpreting the results.
The per shader type frame times may also be inaccurate. We should gate their display using the existing developer mode check. Consider whether they should automatically appear when in developer mode or if the setting becomes available for them when in developer mode. If the settings route is chosen, we also do not want to have random user questions about a disabled setting so completely hide the setting instead of disabling in imgui.
This must be done in a performant way since these are for debug purposes.
Overall frame time and fps are intended to be shown to users so should not be hidden.