Refactor application context and repository structure

- Updated `AppContext` to include separate repositories for movies, reviews, diaries, and stats.
- Modified use cases to utilize the new repository structure, ensuring that the correct repositories are called for their respective operations.
- Introduced `DiaryRepository` and `StatsRepository` traits to encapsulate diary and statistics-related operations.
- Updated all relevant use cases, handlers, and tests to reflect the changes in repository usage.
- Ensured that panic repositories are updated to implement the new traits for testing purposes.

crates/presentation/src/handlers.rs

@@ -878,7 +878,7 @@ pub mod api {
     ) -> Result<impl IntoResponse, ApiError> {
         let movie = state
             .app_ctx
-            .repository
+            .movie_repository
             .get_movie_by_id(&MovieId::from_uuid(movie_id))
             .await?
             .ok_or_else(|| ApiError(DomainError::NotFound(format!("Movie {movie_id}"))))?;