[Feature] filter folder by tags

[alimmroth]

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Is your feature request related to a problem? Please describe.
Tags can be a very useful feature, if they are supported nicely and quickly at hand. At the moment, the only things you can do (correct me if I'm wrong) is showing an overview of all files by one tag and search for a single tag in the unified esearch.

Describe the solution you'd like
I think one very useful feature would be to add the option to filter by one or multiple tags to the folder filtering options.

Additional context
Folder filter options right now

[provokateurin]

Good idea 👍

[schaarsc]

may be related to #4851