initial refactor in preparation for routing

Signed-off-by: William Casarin <jb55@jb55.com>

src/user_account.rs

@@ -1,6 +1,9 @@
-use enostr::{FullKeypair, RelayPool};
+use enostr::Keypair;
 
-pub struct UserAccount {
-    pub key: FullKeypair,
-    pub relays: RelayPool,
-}
+//pub struct UserAccount {
+//pub key: Keypair,
+//pub relays: RelayPool,
+//pub relays: Vec<String>,
+//}
+
+pub type UserAccount = Keypair;