chore: seed sample video data, add spec 033 and update instructions

backend/seeds/seed.py

@@ -316,6 +316,8 @@ SAMPLE_PROPERTIES = [
         "area_m2": 98,
         "is_featured": True,
         "is_active": True,
+        "video_url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
+        "video_position": "section",
         "amenity_slugs": [
             "ar-condicionado",
             "armario-embutido",
@@ -346,6 +348,8 @@ SAMPLE_PROPERTIES = [
         "area_m2": 220,
         "is_featured": True,
         "is_active": True,
+        "video_url": "https://www.youtube.com/watch?v=ysz5S6PUM-U",
+        "video_position": "carousel",
         "amenity_slugs": ["piscina", "churrasqueira", "jardim", "quintal"],
         "photos": [
             {
@@ -396,6 +400,8 @@ SAMPLE_PROPERTIES = [
         "area_m2": 380,
         "is_featured": True,
         "is_active": True,
+        "video_url": "https://vimeo.com/76979871",
+        "video_position": "section",
         "amenity_slugs": [
             "piscina",
             "vista-panoramica",