[FR] garbage collection for old or no longer used log files and images

### Description

It would be useful if there was a "carbage collection" button (or something similar) under "Settings" that could be used to delete all old or no longer needed files of the folder "AppFlowyDataDoNotRename".

### Impact

The "carbage collection" function reduces the number of files, which leads to a reduction in folder size. Firstly, this would be an advantage for users who regularly back up their data. Secondly, it would be an advantage for support if there are problems with the data and the entire "AppFlowyDataDoNotRename" folder has to be sent for data recovery.

### Additional Context

I have been using Appflowy since v0.0.5.3 and have made many updates (W11, portable/. zip) since then. I have now looked at the files in the folder "AppFlowyDataDoNotRename" and noticed the following: 1) In the folder "AppFlowyDataDoNotRename": there are now many files (129) that start with "AppFlowy-Client.log" and "log". One log file is even 47MB in size! 2) In the folder "collab_db" there are now many files (270) with the extension ".log" and many files that begin with "LOG.old". 3) The "images" folder still contains images that are no longer included in AppFlowy.