Fix/firezone id handling (#2958)

fixes #2651 

Wip because firezone portal doesn't handle names longer than 8
characters yet cc @AndrewDryga

rust/firezone-cli-utils/src/lib.rs

@@ -34,10 +34,10 @@ pub struct CommonArgs {
         default_value = "wss://api.firezone.dev"
     )]
     pub api_url: Url,
-    /// Identifier generated by the portal to identify and display the device.
-    #[arg(short = 'i', long, env = "FIREZONE_ID")]
-    pub firezone_id: String,
     /// Token generated by the portal to authorize websocket connection.
     #[arg(env = "FIREZONE_TOKEN")]
     pub token: String,
+    /// Friendly name to display in the UI
+    #[arg(short = 'n', long, env = "FIREZONE_NAME")]
+    pub firezone_name: Option<String>,
 }