Add documentation website

[davidmeirlevy]

Use Nuxt docs or vitepress.

First content:

• content from readme file.
• content from node sdk readme file

[Himasnhu-AT]

@davidmeirlevy Where are you planing to keep the docs in file system?

at root of monorepo or inside any other dir's

[davidmeirlevy]

At root, open a directory named "docs" or "documentation".