Add a GreetingCard to greet members:)

[amabelleS]

Create a greeting card to welcome members, and display GitHub picture, or an avatar if logged in otherwise. Path: app/(routes)/(homepage-sections)/_greeting-card/index.tsx

You can follow this example, to begin with, just the part of the use card, minute 38: https://www.youtube.com/watch?v=w2h54xz6Ndw&list=PL0Zuz27SZ-6Pk-QJIdGd1tGZEzy9RTgtj&index=19

notice: its GreetingCard not* UserCard :)

[amabelleS]

Until we are connected to DB - display hardcoded text