Summary of updated snapshots

[KaeganCasey]

Is your feature request related to a problem? Please describe.

When I run snapshot update and only a few snapshots have changed or a few new ones get created it currently gives a summary saying "x snapshots have been updated".

Describe the solution you'd like

It would be wonderful if it could print a complete list of the names of each of the snapshots so that you can feel more confident that only the ones you expected to be updated / created were changed. This would give me more confidence when updating snapshots and a clear list of the ones I should go look at manually to validate their correctness. Ideally it would have a separate section where it prints the names of any snapshots that were updated and then another section for printing the names of newly created snapshots.

Thank you very much for this awesome library it saves me so much time and effort and has beautiful syntax.

[noahnu]

1. Perhaps we can extend --snapshot-details. This should be relatively straightforward if you're interested in contributing (otherwise no ETA on my side at the moment, I'm trying to get some more internal contributors to work through the open issues list).
2. I didn't realize it was via a Pycharm plugin. I think that should be doable. I'll need to dig into the plugin some more. My main concern with repr is that we'd have to perform an IO operation to read the snapshot.

[KaeganCasey]

That all sounds awesome! Thank you for responding so quickly! No rush as these are mostly cosmetic enhancements.

[noahnu]

2 is implemented in https://github.com/syrupy-project/syrupy/releases/tag/v4.7.0. Will edit this issue so it's scoped to snapshot details