[xcuitest] more process arguments

It looks like iOS/macOS has more process arguments that can control configurations in addition to:

AppleTemperatureUnit, AppleMetricUnitsm and AppleMetricUnits are. For example, "processArguments": {args: ["-AppleLanguages","(ja)","-NSLanguages","(ja)", "-AppleTemperatureUnit", "Celsius", "-AppleMetricUnits", "<false/>"]} for the iOS’s capabilities set. Perhaps how properly work with them could depend on app’s implementation.