Main changes:
- Add an option to add multi-line comments at the top of the generated
file.
- Add an option to name the top-level type.
Additional changes:
- Replace deprecated strings.Title with a custom title function.
- Refactor code based on linter feedback.
- Update LICENSE.
- Update go.mod and upgrade github.com/dave/jennifer from
v1.5.1 to v1.7.0.
- Update documentation.