refactor: remove unused Option from Media.url field

Now that the Apple Music fetcher supports URLs as well we can remove
some messy templating logic.

server/src/scrapers.rs

···
     pub name: String,
     pub image: String,
     pub context: String,
-    pub url: Option<String>,
+    pub url: String,
 }
 
 #[derive(Debug, Clone, Copy, Display, EnumString, Deserialize)]

server/src/scrapers/apple_music.rs

···
             name: track.attributes.name.clone(),
             image: artwork_url,
             context,
-            url: Some(track.attributes.url.clone()),
+            url: track.attributes.url.clone(),
         })
     }
 

server/src/scrapers/backloggd.rs

···
         name,
         image,
         context: platform,
-        url: Some(url.into()),
+        url: url.into(),
     })
 }
 

server/src/scrapers/letterboxd.rs

···
         name,
         image: image_url_data.url,
         context: formatted_rating,
-        url: Some(url.into()),
+        url: url.into(),
     })
 }
 

server/src/templates/index.rs

···
             name: "Cyberpunk 2077: Ultimate Edition".to_owned(),
             image: "https://images.igdb.com/igdb/image/upload/t_cover_big/co7iy1.jpg".to_owned(),
             context: "Nintendo Switch 2".to_owned(),
-            url: Some("https://backloggd.com/u/cherryfunk/logs/cyberpunk-2077-ultimate-edition/".to_owned())
+            url: "https://backloggd.com/u/cherryfunk/logs/cyberpunk-2077-ultimate-edition/".to_owned()
         })),
         (MediaType::Film, Some(Media {
             name: "The Thursday Murder Club".to_owned(),
             image: "https://a.ltrbxd.com/resized/film-poster/6/6/6/2/8/6/666286-the-thursday-murder-club-0-230-0-345-crop.jpg?v=4bfeae38a7".to_owned(),
             context: "1 star".to_owned(),
-            url: Some("https://letterboxd.com/ivom/film/the-thursday-murder-club/".to_owned())
+            url: "https://letterboxd.com/ivom/film/the-thursday-murder-club/".to_owned()
         })),
         (MediaType::Song, Some(Media {
             name: "We Might Feel Unsound".to_owned(),
             image: "https://is1-ssl.mzstatic.com/image/thumb/Music124/v4/f4/b2/8e/f4b28ee4-01c6-232c-56a7-b97fd5b0e0ae/00602527857671.rgb.jpg/240x240bb.jpg".to_owned(),
             context: "James Blake — James Blake".to_owned(),
-            url: Some("https://music.apple.com/gb/album/we-might-feel-unsound/1443124478?i=1443125024".to_owned())
+            url: "https://music.apple.com/gb/album/we-might-feel-unsound/1443124478?i=1443125024".to_owned()
         })),
     ]
 }

server/templates/media.html

···
-{% if let Some(url) = media.url %}
-<a href="{{ url }}" target="_blank"
-{% else %}
-<div
-{% endif %}
-    class="peer/{{ media_type }} relative aspect-square max-h-50 justify-self-center hoverable:max-h-none">
+<a
+  href="{{ media.url }}"
+  target="_blank"
+  class="peer/{{ media_type }} relative aspect-square max-h-50 justify-self-center hoverable:max-h-none"
+>
   <img
     class="absolute inset-0 aspect-square rounded-xs object-fill"
     aria-hidden="true"
···
     src="{{ media.image }}"
     alt="Cover art for {{ media.name }}"
   />
-{% if let Some(url) = media.url %}
 </a>
-{% else %}
-</div>
-{% endif %}
-{% if let Some(url) = media.url %}
 <a
-  href="{{ url }}"
+  href="{{ media.url }}"
   target="_blank"
-{% else %}
-<div
-{% endif %}
   id="media-description-{{ media_type }}"
   class="mx-2 mt-4 flex flex-col self-center peer-hover/{{ media_type }}:block hoverable:col-span-full hoverable:row-2 hoverable:hidden"
   hx-swap-oob="true"
 >
   <p class="text-2xl text-white">{{ media.name }}</p>
   <p class="text-xl text-gray-700 italic">{{ media.context }}</p>
-{% if let Some(url) = media.url %}
 </a>
-{% else %}
-</div>
-{% endif %}