adding basis for song_editor

src/ui/song_editor.rs

@@ -0,0 +1,30 @@
+use cosmic::{Element, Task};
+
+use crate::core::songs::Song;
+
+#[derive(Debug, Clone)]
+pub struct SongEditor {
+    song: Option<Song>,
+}
+
+#[derive(Debug, Clone)]
+pub enum Message {
+    ChangeSong(Song),
+    UpdateSong(Song),
+}
+
+impl SongEditor {
+    pub fn new() -> Self {
+        Self { song: None }
+    }
+    pub fn update(&self, message: Message) -> Task<Message> {
+        match message {
+            Message::ChangeSong(song) => todo!(),
+            Message::UpdateSong(song) => todo!(),
+        }
+    }
+
+    pub fn view(&self) -> Element<Message> {
+        todo!()
+    }
+}