Independent clamping and round modes for EE/FPU and VUs (#166)

* Splitted  clamping and round modes options for both EE/FPU and VUs

* fix on VU clamping mode option labeling
2 jobs for main in 4 minutes and 2 seconds (queued for 2 minutes and 43 seconds)
Status Name Job ID Coverage
  Build Shared
passed libretro-build-linux-x64 #904531

00:02:20

passed libretro-build-windows-x64 #904530
msvc2019

00:01:41