Rename media sources (#25)

* Renamed MediaSource to Sources

* Renamed MediaItem controller namespace

lib/pinchflat_web/controllers/media_items/media_item_html/show.html.heex

@@ -0,0 +1,29 @@
+<div class="mb-6 flex gap-3 flex-row items-center justify-between">
+  <div class="flex gap-3 items-center">
+    <.link navigate={~p"/sources/#{@media_item.source_id}"}>
+      <.icon name="hero-arrow-left" class="w-10 h-10 hover:dark:text-white" />
+    </.link>
+    <h2 class="text-title-md2 font-bold text-black dark:text-white ml-4">
+      Media Item #<%= @media_item.id %>
+    </h2>
+  </div>
+  <nav>
+    <.link
+      href={~p"/sources/#{@media_item.source_id}/media/#{@media_item}?delete_files=true"}
+      method="delete"
+      data-confirm="Are you sure?"
+    >
+      <.button color="bg-meta-1" rounding="rounded-full">
+        Delete Record and Files
+      </.button>
+    </.link>
+  </nav>
+</div>
+<div class="rounded-sm border border-stroke bg-white px-5 pb-2.5 pt-6 shadow-default dark:border-strokedark dark:bg-boxdark sm:px-7.5 xl:pb-1">
+  <div class="max-w-full overflow-x-auto">
+    <div class="flex flex-col gap-10 dark:text-white">
+      <h3 class="font-bold text-xl">Attributes</h3>
+      <.list_items_from_map map={Map.from_struct(@media_item)} />
+    </div>
+  </div>
+</div>