Add close button to Viewer

src/routes/[country]/[location]/[photo].svelte

@@ -218,6 +218,17 @@
     <div class="container grid">
         <p class="viewer-photo__notice text-label">Tap for fullscreen</p>
 
+        <ButtonCircle
+            tag="a"
+            url="/{location.country.slug}/{location.slug}"
+            color="purple"
+            class="viewer-photo__close shadow-box-dark"
+        >
+            <svg width="12" height="12">
+                <use xlink:href="#cross">
+            </svg>
+        </ButtonCircle>
+
         <div class="viewer-photo__carousel">
             <div class="viewer-photo__images" use:swipe on:swipe={handleSwipe} on:tap={toggleFullscreen}>
                 {#each visiblePhotos as photo, index (photo.id)}