Track `Lookup` information

[SirYwell]

The class the Lookup instance is associated with:
https://docs.oracle.com/en/java/javase/20/docs/api/java.base/java/lang/invoke/MethodHandles.Lookup.html#lookupClass()

The lookup mode:
https://docs.oracle.com/en/java/javase/20/docs/api/java.base/java/lang/invoke/MethodHandles.Lookup.html#lookupModes()

This is required for some type information (e.g. findVirtual), and might allow useful inspections in more cases.