feat: add multi-account ability

src/mastodon.rs

@@ -65,7 +65,7 @@ pub fn build_basic_status(tweet: &Tweet) -> String {
 /// Generic register function
 /// As this function is supposed to be run only once, it will panic for every error it encounters
 /// Most of this function is a direct copy/paste of the official `elefren` crate
-pub fn register(host: &str) {
+pub fn register(host: &str, screen_name: &str) {
     let mut builder = App::builder();
     builder
         .client_name(Cow::from(env!("CARGO_PKG_NAME").to_string()))
@@ -100,7 +100,12 @@ pub fn register(host: &str) {
     let toml = toml::to_string(&*mastodon).unwrap();
 
     println!(
-        "Please insert the following block at the end of your configuration file:\n[mastodon]\n{}",
+        "Please insert the following block at the end of your configuration file:
+        \n[mastodon.{}]
+        \ntwitter_screen_name = \"{}\"
+        \n{}",
+        screen_name.to_lowercase(),
+        screen_name,
         toml
     );
 }