Serve static assets with an efficient cache policy

<img width="721" alt="Screen Shot 2564-10-21 at 15 31 09" src="https://user-images.githubusercontent.com/80441020/138241163-a652e653-0029-414b-9d74-562ff3f3596b.png">
https://web.dev/uses-long-cache-ttl/?utm_source=lighthouse&utm_medium=devtools

CC: @kidchenko @aaronamm 