Develop a library of example codemods / starting points:

Give users a list of examples to choose from, like:
- rename a variable
- reorder arguments to a method
- ...

Make it easy to add new templates to the list of examples to encourage community involvement in developing good examples.

When accepting a new template / adding something to the list:
1. It shouldn't do the same thing as another example.
2. It shouldn't be something users could easily modify an existing example to do.

No files, tests, or entry points are named. Start by inspecting the generator's current structure and how templates or examples are represented; done means users can choose distinct codemod starting points and contributors can add templates under the stated duplication rules.

Written by the indexing model from the issue text.