Make it possible to fix imports for Suggest() replacements

[quasilyte]

If we're proposing some replacement, sometimes we need to fix the imports.

There are 2 cases:

• Some X package usage is removed after rewrite. We need to make sure that package doesn't become "imported and not used".
• Some X package usage is added after rewrite. We need to make sure that package is imported.

Or we can imply that goimports should be used to fix the code afterwards.

[JesseObrien]

Bump on this. I need to update imports after some Suggest changes. I'm updating log items to use log/slog and need that import updated. Is the recommended way to handle this to run goimports on the files after running ruleguard?

[quasilyte]

Is the recommended way to handle this to run goimports on the files after running ruleguard?

Right now, it is. :(