add func to plistyamlplist_lib so external projects can import easily

[discentem]

This change makes it easier to use plist-yaml-plist as a library by giving callers back a string instead of writing automatically writing to a file. I already tested this change in my fork though please test yourself in case I am missing something. I am also happy to add a unit test if desired.

https://github.com/autopkg/discentem-recipes/blob/main/SharedProcessors/lib/plist_yaml_plist/plist_yaml.py#L109C1-L121C18

[grahampugh]

Hi, can you take a look at the dev branch, it's a merge of fairly significant changes, so I'm not sure if your issue still stands or how I would be able to merge it in if so.

[discentem]

Hi, can you take a look at the dev branch, it's a merge of fairly significant changes, so I'm not sure if your issue still stands or how I would be able to merge it in if so.

Should I rebase on dev to see if the changes are still relevant?

[grahampugh]

Yes please, if you can. It's different enough that I can't figure out what the original intention was.