feat!: distinguish URLs and hosts

BREAKING CHANGE: the configuration for Bitmagnet and Ntfy has changed.
Instead of `host`, they now use `url`.

src/notifications/ntfy/config.rs

@@ -1,6 +1,7 @@
 use crate::app::Enableable;
-use crate::config::types::{Host, Password, Topic, Username};
+use crate::config::types::{Password, Topic, Username};
 use serde::{Deserialize, Serialize};
+use url::Url;
 
 /// Configuration for the ntfy notification service
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -9,8 +10,8 @@ pub struct NtfyConfig {
     #[serde(default)]
     pub enable: bool,
 
-    /// The host URL of the ntfy server
-    pub host: Host,
+    /// The URL of the ntfy server
+    pub url: Url,
 
     /// The username for authentication (optional)
     #[serde(default)]