Sync conflict dialog can be more informative

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## Feature request

**Which Nextcloud Version are you currently using:** 31.0.0, client version: 3.15.3/Arch Linux

**Is your feature request related to a problem? Please describe.**
Solving sync dialog is not very convenient to use. I see the name of the file and the size, but I see no way to check the path of the conflicted file. There's no way to open it, neither the local version nor the server version. There's no easy way to compare the content.

**Describe the solution you'd like**
Improve the conflict dialog. Add more information like path of the file, maybe some preview or at least a possibility to open both versions to compare manually.

**Describe alternatives you've considered**
For now the only solution I found is to search manually the Nextcloud directory for provided name of the file and then search Nextcloud server for same file, then compare them manually. Terrible experience.

**Additional context**