Replace Language Curricula images with filter

[nieldakarla]

I'm writing this issue to keep track of this update. Quincy has requested replacing all images with filters used in the Language Curricula with either the same image without a filter or a similar one, as long as the image is licensed under CC0.

The images in question can be found in this folder: build/curriculum/english/animation-assets/images/backgrounds
https://github.com/freeCodeCamp/cdn/tree/main/build/curriculum/english/animation-assets/images/backgrounds

As I went through the folder, I noticed that many of these images belong to another project — Learn to Code RPG. Since Learn to Code RPG has its own repo , there is no need for these extra images to be present in this folder, especially now that more curricula are being built and potentially more backgrounds will be added.

So, my suggestion is not only to replace the filtered images used in the Language Curricula but also to remove any images the team will not be using.

This will affect the file curriculum/schema/scene-assets.js
in the main freeCodeCamp repo. A PR will also be needed to reflect these changes.

Backgrounds currently in use will not be deleted. Since the new images will have the same names as the originals, the current Language Curricula scripts should not be affected.

Below is a list of what should remain with updated versions (without filters) and what should be removed:

In use and should be updated:

cafe.png
chaos.png
company1-boardroom.png
company1-reception.png
company2-boardroom.png
company2-breakroom.png
company2-center.png
company2-parking.png
company2-roof.png
company3-reception.png
desk.png
interview-room1.png
interview-room2.png
interview-room3.png
living-room.png

Not in use, but probably should stay and be updated:

company1-breakroom.png
company1-center.png
company1-dining.png
company1-lydia-cubicle.png
company1-parking.png
company1-roof.png
company2-dining.png
company2-lydia-cubicle.png
company2-reception.png
company3-boardmeeting.png
company3-breakroom.png
company3-center.png
company3-dining.png
company3-lydia-cubicle.png
company3-parking.png
company3-roof.png
cubicle.png
hacker-space-cafe.png
hacker-space.png

Images currently used in tasks (tasks must be updated before deletion):
office-cafe.png

Not in use and not needed. So, could be deleted.

bedroom-empty.png
classroom.png
farm.png
hall-audience.png
hall.png
kid-home.png
kitchen.png
laptop-screen.png
office.png
park1.png
park2.png
park3.png
park4.png
pong-field.png
tunnel.png