Does not work out of the box when debugging BasicObject

[jabamaus]

Your environment

ruby 3.1.1p18 (2022-02-18 revision 53f5fc4236) [x64-mingw-ucrt]
rdbg 1.5.0
vscode 1.66 vscode-rdbg 0.0.10

Describe the bug
rdbg crashes if user tries to inspect a BasicObject (only tested through vscode so I don't know about other paths).

In particular calls to obj.instance_variables and obj.class fail because BasicObject does not have these methods by default.

To Reproduce
Inspect a BasicObject in variable window in vscode

Expected behavior
I would expect to not have to add 'instance_variables' and 'class' method to my BasicObject, or to have this requirement documented (preferably the former). Ideally calls to these methods should be handled safely like inspect, but maybe without printing a large exception message in variables window.

[jabamaus]

Thank you!