Introduce a NativeDetector utility class

[sdeleuze]

If oracle/graal#2594 get fixed in time we should probably reintroduce GraalDetector renamed to NativeDetector for a wider scope (could be useful for Project Leyden). It was removed via 806eb5c.

[sdeleuze]

@jhoeller I got the confirmation the related GraalVM issue will fixed in 20.3 but not in time for our 5.3 GA, could we create a 5.3.1 milestone and target it for this issue resolution?

[sdeleuze]

Blocked on oracle/graal#2594.