feat(Foxford): add presence

[cramatsu]

Description

Adding presence for https://foxford.ru/

Note to the founders of this project: This online school is the most visited in the Russian Federation (more than 300k students). Peace ✌🏿

Acknowledgements

• [x] I read the Presence Guidelines
• [x] I linted the code by running yarn format
• [x] The PR title follows the repo's commit conventions

Screenshots

Proof showing the creation/modification is working as expected

[cramatsu]

Yo, what's wrong with metadata.json The location and data of the file are the same as the rest

[DarkVillager]

Yo, what's wrong with metadata.json The location and data of the file are the same as the rest

Nothing, just wait for the fix #6800

[cramatsu]

Yo, what's wrong with metadata.json The location and data of the file are the same as the rest

Nothing, just wait for the fix #6800

I'll be looking forward to it🥰