Sort by metadata

[hacknus]

Feature request to display metadata and sort by size, date etc (#165)

This PR relies on #184.

• implementation of TableBuilder
• waiting for fix of egui tables (selection bug): Click and hover not work when interactive with none-interactive widgets(such as Label) in Table emilk/egui#5045, done with workaround
• sorting implemented
• truncating of date needs to be implemented. show time only for today, yesterday
• multiple selection adapted for this change
• col width needs to be set (especially for the last column, seems to be a bug with egui layouting...)

EDIT: moved this PR over here so you can review/edit, the diffs here should be more clear once #184 is merged.

[fluxxcode]

Thank you for the implementation! I'll do a review once #184 is merged and the changes here are cleaned up.
However, I think we'll have quite a few merge conflicts here when #184 is squash merged.

[hacknus]

Sure! I'll solve the conflicts before your review.

[hacknus]

no more merge conflicts, up to date with develop. But the issue with the column width is not solved.