Add some description to the eagle-eye & architecture images

[pirog-spb]

Should we add some description to the eagle-eye, architecture and packet forwarding pipeline images?

Originally posted by @ewdss in https://github.com/edgecomllc/eupf/issues/18#issuecomment-1576326253

Acceptance criteria:

• [ ] Reaserch github SEO optimization technics
• [x] Refactor of README main page (Goal is to simplify landing page)
• [x] Update schemes and images according to current architecture & implimentation
• [ ] Present to team

[pirog-spb]

There is nothing to add