893c404230
Added `option-actuatorgroupdisable` attribute and associated `mjOption.disableactuator` integer bitfield, used to disable sets of actuators at runtime according to their group. - The first 6 actuator groups are toggleable in the `simulate` viewer. - Minor refactor and cleanup of actuator documentation. https://youtu.be/H9qG9Zf2W44 Fixes #1092. PiperOrigin-RevId: 578335600 Change-Id: I4cf663b90ea768e4380acfa2fe3b8c15c7cbb568