macOS ARM - Incorrect process CPU times

Based on similar code in other projects it looks like the process CPU times may not be scaled correctly on Apple M1 / M2 hardware. This code needs to apply a scaling factor from https://developer.apple.com/documentation/driverkit/mach_timebase_info_t to the ticks. Under intel macs these were simple 1 tick = 1 nanosecond so it just worked.

https://github.com/elastic/go-sysinfo/blob/f544eca983fbc8de1d9f479ba18628dbcebb3e87/providers/darwin/process_darwin.go#L155-L156

## Related
- https://openradar.appspot.com/radar?id=5055988478509056
- https://github.com/elastic/gosigar/issues/168
- https://github.com/elastic/elastic-agent-system-metrics/issues/79