Identify new transpiler passes for roadmap

[jordandsullivan]

We should review our internal notes, particularly initial explorations done by @sonikaj to identify a list of potential new transpiler passes to incorporate into UCC.

1. For the initial scope, let's try to find 10 techniques that seem promising.

2. Next we will go down the list and assess their potential for performance improvement, most likely a heuristic like gate reduction shown in the paper or blog it was published in.

3. Then finally we can move onto actually contributing. Check out How should devs contribute new transpiler passes? (WiP) #55 for a discussion of a more in-depth Contributing Guide for transpiler passes.