osandov/drgn

AI Summary: The task involves porting existing commands from the `crash` debugger to the `drgn` debugger, aiming to provide a familiar interface for users transitioning from `crash`. This includes replicating command output and behavior, creating new `drgn` helper functions, adding a `--drgn` option to show equivalent `drgn` API usage, and writing test cases. The work is tracked in a separate branch and will eventually be merged into the main branch.