Optimize image assets

[ylluminate]

As per vone's suggestion:

[9:01 AM] vone: @Alex M I like to PR images on websites, Optimage has saved >1MB, will benefit for those with low Internet bandwidth
[9:01 AM] vone: But I don’t know where to PR?
[9:16 AM] vone: Linux.png has 51KB can be reduce too

[Zerotask]

Yep, using a GitHub action to automatically optimize images is the best way I guess. edit: since the previous guy deleted his post, his suggestion was using a GitHub action like https://github.com/calibreapp/image-actions