Add collection detail page (#37897)

app/javascript/mastodon/features/collections/styles.module.scss

@@ -1,48 +0,0 @@
-.collectionItemWrapper {
-  display: flex;
-  align-items: center;
-  gap: 16px;
-  margin-inline: 10px;
-  padding-inline-end: 5px;
-  border-bottom: 1px solid var(--color-border-primary);
-}
-
-.collectionItemContent {
-  position: relative;
-  flex-grow: 1;
-  padding: 15px 5px;
-}
-
-.collectionItemLink {
-  display: block;
-  margin-bottom: 2px;
-  font-size: 15px;
-  font-weight: 500;
-  text-decoration: none;
-  color: var(--color-text-primary);
-
-  &:hover {
-    color: var(--color-text-brand);
-  }
-
-  &::after {
-    // Increase clickable area by extending link across parent
-    content: '';
-    position: absolute;
-    inset: 0;
-  }
-}
-
-.collectionItemInfo {
-  --gap: 0.75ch;
-
-  display: flex;
-  gap: var(--gap);
-  font-size: 13px;
-  color: var(--color-text-secondary);
-
-  & > li:not(:first-child)::before {
-    content: '·';
-    margin-inline-end: var(--gap);
-  }
-}