Rewrite the structure of the gui and cli interfaces

Added a more modular way to add windows

src/ui/gui/windows/song_new.rs

@@ -0,0 +1,72 @@
+use crate::manifest::song::{Song, SongType};
+use super::{State, Window};
+
+#[derive(Debug, Default)]
+pub struct GuiNewSong {
+    ed_type: SongType,
+    ed_name: String,
+    ed_playlist: Option<String>,
+    ed_url: String,
+}
+
+impl Window for GuiNewSong {
+    fn ui(&mut self, state: &mut State, ctx: &egui::Context, open: &mut bool) -> anyhow::Result<()> {
+        let mut save = false;
+        egui::Window::new("New song")
+            .open(open)
+            .show(ctx, |ui| {
+                ui.horizontal(|ui| {
+                    ui.label("Type: ");
+                    egui::ComboBox::from_id_source("new_song_window_type")
+                        .selected_text(format!("{:?}", self.ed_type))
+                        .show_ui(ui, |ui| {
+                            ui.selectable_value(&mut self.ed_type, SongType::Youtube, "Youtube");
+                            ui.selectable_value(&mut self.ed_type, SongType::Spotify, "Spotify");
+                            ui.selectable_value(&mut self.ed_type, SongType::Soundcloud, "Soundcloud");
+                        }
+                    );    
+                });
+
+                ui.horizontal(|ui| {
+                    ui.label("Name: ");
+                    ui.text_edit_singleline(&mut self.ed_name);
+                });
+                ui.horizontal(|ui| {
+                    ui.label("Playlist: ");
+                    egui::ComboBox::from_id_source("new_song_window_playlist")
+                        .selected_text(format!("{}", self.ed_playlist.clone().unwrap_or("".to_string())))
+                        .show_ui(ui, |ui| {
+                            for p in state.manifest.get_playlists().keys() {
+                                ui.selectable_value(&mut self.ed_playlist, Option::Some(p.clone()), p.as_str());
+                            }
+                        }
+                    );    
+                });
+                ui.horizontal(|ui| {
+                    ui.label("Url: ");
+                    ui.text_edit_singleline(&mut self.ed_url);
+                });
+
+                if ui.button("Save").clicked() {
+                    save = true;
+                }
+        });
+
+        if save {
+            let Some(playlist) = state.manifest.get_playlist_mut(&self.ed_playlist.clone().unwrap())  else {
+                panic!("couldnt find playlist from a preset playlist list????????????");
+            };
+
+            playlist.add_song(
+                self.ed_name.clone(),
+                Song::from_url_str(self.ed_url.clone()).unwrap().set_type(self.ed_type.clone()).clone()
+            );
+
+
+            let _ = state.manifest.save(None);
+            *open = false;
+        }
+
+        Ok(())
+    }
+}