docs: Improve header + sidebar

docs: Create workflows
lib: Start pagination

src/routes/_internal/layout/page.svelte

@@ -0,0 +1,33 @@
+<script lang="ts">
+    import IconPencil from 'virtual:icons/heroicons-outline/pencil'
+    import { page } from '$app/stores'
+
+    export let title
+    let pageUrl = `https://github.com/modrinth/omorphia/edit/main/src/routes/${$page.url.pathname.replace('/', '') || 'index'}.md`
+</script>
+
+<svelte:head>
+    <title>{title ? `${title} - Omorphia` : 'Omorphia'}</title>
+</svelte:head>
+
+<article>
+    {#if title}<h1>{title}</h1>{/if}
+    <a class="edit-link" href={pageUrl}>
+        <IconPencil/>
+        Edit this page on GitHub</a>
+    <slot/>
+</article>
+
+<style lang="postcss">
+    article {
+        max-width: 800px;
+        padding: 5rem max(8vw, 1rem);
+    }
+
+    .edit-link {
+        display: flex;
+        align-items: center;
+        grid-gap: 8px;
+        margin-bottom: 64px;
+    }
+</style>