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: https://github.com/openfoodfacts/power-user-script/blob/189026fb658f14bee0b510fcd27e27c07ab6be7c/OpenFoodFactsPower.user.js#L747