Add movie detail API and enhance draft admin/participant UI

- Introduced `/api/movie/<id>/detail` endpoint returning TMDB data for a movie.
- Moved draft detail fetching logic into `common/utils.js` for reuse.
- Updated Draft Admin panel:
  - Added phase navigation buttons with bootstrap icons.
  - Improved layout with refresh and status controls.
- Updated Draft Participant panel:
  - Added movie pool display with links to movie details.
- Added bootstrap-icons stylesheet and corresponding SCSS styles for new UI.

api/urls.py

@@ -1,9 +1,18 @@
 from rest_framework.routers import DefaultRouter
-from .views import UserViewSet, MovieViewSet, DraftSessionViewSet
+from .views import UserViewSet, MovieViewSet, DraftSessionViewSet, movie_detail
+from django.urls import path
 
 router = DefaultRouter()
 router.register(r'users', UserViewSet, basename='user')
 router.register(r'movies', MovieViewSet, basename='movie')
 router.register(r'draft', DraftSessionViewSet, basename='draft')
 
-urlpatterns = router.urls
+
+urlpatterns = [
+  *router.urls,
+  path(
+        "movie/<int:movie_id>/detail",
+        movie_detail,
+        name="movie-detail"
+    ),
+]