Detailed view for excluded files

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## Feature request

With #8109 there is no way from within the client to see that some files are being excluded from the sync. Previously a persistent notification would appear in the activity list, which was annoying to always have it there. (the Shell integrations indicate ignored files by displaying a different status icon)

I would like to see a list of all files/directories that are ignored by the client, ideally including the specific rule that caused the file to be ignored. e.g.:

| File | Excluded by rule |
| - | - |
| 📄 Documents/.DS_Store | `.DS_Store` |
| 📁 Documents/IgnoredTest | `Documents/IgnoredTest` |
| 📁 Development/blog/.git | `.git` |
| 📄 Development/blog/.Gemfile.swp | `*.swp` |
| 📄 .DS_Store | `.DS_Store` |

Perhaps from there we can also point directly to the rule in the exclude list so it can be edited