Add ability to parse section from in memory buffer

[micahsnyder]

Resolves: https://github.com/msiemens/onenote.rs/issues/12

This is a rather simple solution I've made that gets the job done. Perhaps a better implementation would read from anything that implements the Reader trait. Like how it is done in the rust-delharc crate. But I think that would require more extensive changes to your Reader module.

[micahsnyder]

Er I meant to ping this one 🫢, not the github issue.

[opoplawski]

It would be very helpful for Fedora packaging if this was applied. Is this project still active, or should we consider the https://github.com/Cisco-Talos/onenote.rs fork as canonical now?