Initial component sort/cleanup

ref #68

src/components/base/Transition.svelte

@@ -0,0 +1,11 @@
+<!-- Transition.svelte -->
+<script>
+  import { router } from "tinro";
+  import { fade } from "svelte/transition";
+</script>
+
+{#key $router.path}
+  <div in:fade={{ duration: 75 }}>
+    <slot />
+  </div>
+{/key}