Create a remove duplicates functionality

[shaydonb]

Problem: Sometimes register names contain duplicate strings that
unnecessarily lengthen them.

Solution: Remove the largest duplicated substring, with a specified
delimiter to avoid removing mere duplicated characters.

[shaydonb]

Hi folks, fumbling around with this new-to-me code base because I am working with some registers that have a lot of duplicated naming within. My unit-level test is passing, but the example patch.yaml doesn't yield the output I would hope to see, which is all duplicate names separated by the same delimiter removed.

Some basic printf debugging indicates that some matches are occurring but the structure of these data structures are a little hard to follow and I'm wondering if anyone might have any suggestions? Thanks in advance for taking a look at the draft PR.