feat: profiles and /set profile, and id cards

* New functionality to set meta data on businesscards.
* Can develop a user profile.
* Business cards link to user profile.

Cargo.toml

@@ -58,6 +58,9 @@ serde_json = "1"
 # Error handling
 thiserror = "2"
 
+# Enum utilities
+strum = { version = "0.26", features = ["derive"] }
+
 # CLI
 clap = { version = "4", features = ["derive", "env"] }