Tracking examples with Noir libs

[jzaki]

• ~BigNum examples from here~ (in sub-issues)
• ~Base64 examples from here~ (in sub-issues)
• ~RSA example from here~ (maybe after 0.57.0)
• ~String search examples for here~ (in sub-issues)
• ~Regex examples part of zkEmail?~ (in sub-issues)

[jzaki]

Related - https://github.com/AztecProtocol/dev-rel/issues/132

[critesjosh]

For these examples, is the intention to use pinned version numbers?

Or should we set up some testing that checks if a newer version of Noir is going to break these examples and notify us that we should update them?

[critesjosh]

Let's use pinned version numbers, and add to noir-examples repo.