Synthetic View of Uploaded Files

Following up with Gain understanding of file uploads usage and Query for recently uploaded / attached files - #3 by techAPJ, the idea is to provide a Files tab that would display uploaded files across the board in a single space.

Files could be arranged by extension, category, tags, etc. to avoid having to dig for posts with attachments in order to retrieve previously uploaded files.

(I had this in a draft, not sure whether it can be moved to an existing topic)