Better filter for "recent changes" page

[CharlesNepote]

The "recent changes" filter (filter as you type) is currently filtering edits that contains a value.

It would be awesome to let users exclude some results:

• -hungergames would list all pages except the ones containing "hungergames"
• -hunger -date-limite would list all pages except the ones containing "hungergames" or "date-limite"
• image -hungerwould list all pages containing "image" except the ones containing "hunger"

Impacts:

• exclude from "traffic" the well known apps (such as kiliweb, hungergames, date-limite, etc.), to identify new users
• allow us to monitor temporary operations/missions

How?
All the code is currently in the "Recent Changes" section of the code. See:

power-user-script/OpenFoodFactsPower.user.js

Line 747 in 189026f

// * Recent Changes page