For archive purposes merge old-main-spa into main

[yangwao]

Somehow there were tons of conflicts and for keeping the tracking records in the main branch, would be nice to merge /spa folder in one commit and in the second commit delete it, so we can remove that branch and have cross git history between branches recorded.

This would help avoid people who have old fork to make accidentally wrong pushes

• back merge main-spa into main
• remove spa/ folder from main

Probably it would be needed as lot's of contributors has old fork:)

Ref

• KodaDot 2.0 - beta & migration #1060
• Service notice of renaming branch main-nuxt to main #1844