[WIP]: split out sesame2spiner lib

[Yurlungur]

PR Summary

This is a first pass at making sesame2spiner linkable and callable. Totally untested at the moment. Also I need to guard things behind a namespace and think about the library naming convention in cmake.

Potentially of interest to @dholladay00 @annapiegra @jhp-lanl

Big disclaimer, I have spent all of 15 minutes on this so far.

PR Checklist

• Adds a test for any bugs fixed. Adds tests for new features.
• Format your changes by using the make format command after configuring with cmake.
• Document any new features, update documentation for changes made.
• Make sure the copyright notice on any files you modified is up to date.