feat: implement project management and media track handling

- Added domain entities for audio, subtitle, and video tracks.
- Created a Project entity to manage media editing sessions.
- Implemented value objects for file paths, sync offsets, track IDs, and languages.
- Developed infrastructure for asynchronous FFmpeg process execution.
- Built a user interface for selecting video files, adding audio and subtitle tracks, and managing output settings.
- Integrated error handling and logging for media processing tasks.

src/application/use_cases/adjust_sync.rs

@@ -0,0 +1,56 @@
+use anyhow::{anyhow, Result};
+use crate::domain::entities::Project;
+use crate::domain::value_objects::{SyncOffset, TrackId};
+
+/// Ajusta o offset de sincronização de uma faixa externa existente pelo TrackId.
+pub struct AdjustSync;
+
+impl AdjustSync {
+    pub fn execute(project: &mut Project, id: TrackId, offset: SyncOffset) -> Result<()> {
+        let track = project
+            .find_track_mut(id)
+            .ok_or_else(|| anyhow!("Faixa não encontrada: {:?}", id))?;
+        track.set_offset(offset);
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::application::use_cases::add_audio_track::AddAudioTrack;
+    use crate::domain::entities::{MkvOutput, Project, VideoFile};
+    use crate::domain::value_objects::{FilePath, TrackLanguage};
+
+    #[test]
+    fn ajusta_offset_existente() {
+        let mut project = Project::new(
+            VideoFile::new(FilePath::from("input.mkv")),
+            MkvOutput::new(FilePath::from("output.mkv")),
+        )
+        .unwrap();
+        let lang = TrackLanguage::new("por").unwrap();
+        AddAudioTrack::execute(
+            &mut project,
+            FilePath::from("audio.aac"),
+            SyncOffset::default(),
+            lang,
+        )
+        .unwrap();
+        let id = project.tracks[0].id();
+
+        AdjustSync::execute(&mut project, id, SyncOffset::from_ms(1200)).unwrap();
+        assert_eq!(project.tracks[0].offset().as_ms(), 1200);
+    }
+
+    #[test]
+    fn erro_se_id_inexistente() {
+        let mut project = Project::new(
+            VideoFile::new(FilePath::from("input.mkv")),
+            MkvOutput::new(FilePath::from("output.mkv")),
+        )
+        .unwrap();
+        let result = AdjustSync::execute(&mut project, TrackId::new(99), SyncOffset::from_ms(500));
+        assert!(result.is_err());
+    }
+}