Add visual introduction to Linear Algebra in the extra readings (based on Strang's "Linear Algebra for Everyone")

[krishnakumarg1984]

My earlier proposal to add Prof Strang's latest Linear Algebra course (Linear Algebra for Everyone) to extra readings/textbooks has been positively recieved. See #910

I am currently enjoying an amazing companion to Prof Strang's LA4E course called "Visual introduction to linear algebra". It provides a nice, clear & intiutive understanding of concepts (like Sanderson's 3B1B, but a bit more formal/technical) through diagrams & other visualisations. The drawings & illustrations are of exceptional quality vector graphics.

Hence, in the same vein, I'd like to ask the moderators to consider adding this resource. The art of linear algebra. The project owner is very active in updating the material through frequent commits.

[waciumawanjohi]

Having given this resource a quick perusal, I like it!
Diagrams are great. A picture is worth a thousand words. And it is certainly worth a PR.

[saerosV]

Hi @waciumawanjohi, how are you doing? I think this issue could be closed.

[waciumawanjohi]

Closed by #956