[Draft] Resolve #646 - remove lombok

[aSemy]

Fixes #646

I used the Intellij Lombok plugin to delombok the code.

This is a proof of concept - Twilio will have to update their code generator.

Checklist

• [x] I acknowledge that all my contributions will be made under the project's license
• [ ] I have made a material change to the repo (functionality, testing, spelling, grammar)
• [x] I have read the Contribution Guidelines and my PR follows them
• [x] I have titled the PR appropriately
• [x] I have updated my branch with the main branch
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] I have added the necessary documentation about the functionality in the appropriate .md file
• [x] I have added inline documentation to the code I modified

I can't run the tests because they are too slow.