added getter-methods to PdInfo

[CommanderStorm]

Currently, all fields of PdInfo are private.
The current way, to get access to them is to as_struct an instance and then compare the c-fields. This is somewhat cumbersome to do and not quite ergonomic.

=> I think making these fields pub is likely better

As an alternative, (if you'd like that more) I can make these fields into methods.
Another alternative would be to just publish parts of the fields, but that is something that I would want your oppinion on ^^

[sidcha]

In the libosdp package, I try to hide libosdp_sys types and others such as CString in public API. To that end, I think it would be nicer to have accessor methods hiding these details for fields in this struct. What do you think?

Also, all public methods and members must have documentation.

[sidcha]

Also, please git pull with --rebase to avoid necessary merge commits. It's not critical but kinda makes git history look clean.

[CommanderStorm]

Also, please git pull with --rebase to avoid necessary merge commits

Sorry, when I synced via githubs UI, that is the (non-changable) default for syncing via the Sync button ^^
Is fixed now

[sidcha]

Thanks for this PR and others :)

[CommanderStorm]

Thanks for this PR and others :)

Thanks a ton for reviewing them ^^