Add ToolLayout and migrate validator to it

src/components/SideLink.svelte

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+<script lang="ts">
+	export let href: string;
+</script>
+
+<li class="mt-1 font-medium text-blue-500 first:mt-0">
+	<a {href} target="_blank">
+		<slot />
+	</a>
+</li>

src/components/SideParagraph.svelte

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+<p class="mt-2 text-gray-700 first:mt-0">
+	<slot />
+</p>

src/layouts/ToolLayout.svelte

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+<script lang="ts">
+	import { Icon, ChevronDoubleDown } from "svelte-hero-icons";
+</script>
+
+<div class="h-auto w-screen lg:h-screen">
+	<div
+		class="flex h-full w-full flex-col place-content-center place-items-center justify-center lg:flex-row lg:place-content-around lg:place-items-center"
+	>
+		<div class="flex h-[90vh] w-4/5 flex-col place-content-center gap-2 p-[2%] lg:h-2/3 lg:w-1/2">
+			<div class="mb-3 text-center">
+				<h1 class="text-2xl font-medium">
+					<slot name="title" />
+				</h1>
+				{#if $$slots.subtitle}
+					<h2 class="text-xl text-gray-500">
+						<slot name="subtitle" />
+					</h2>
+				{/if}
+			</div>
+			<slot name="tool" />
+		</div>
+		<div class="flex h-[10vh] flex-col place-items-center gap-1 lg:hidden">
+			Scroll for more
+			<Icon src={ChevronDoubleDown} class="h-5 w-5" />
+		</div>
+		<div
+			class="mb-[3vh] flex min-h-[100vh] w-4/5 flex-col place-content-center gap-[5vh] p-[2%] lg:h-2/3 lg:w-1/4 lg:gap-4"
+		>
+			{#if $$slots.links}
+				<div>
+					<h1 class="mb-4 text-2xl">Helpful links</h1>
+					<ul>
+						<slot name="links" />
+					</ul>
+				</div>
+			{/if}
+			<div>
+				{#if $$slots.about}
+					<h1 class="mb-3 text-2xl">About this tool</h1>
+					<slot name="about" />
+				{/if}
+				<p class="mt-[3vh] text-center text-gray-500">
+					Made by
+					<span class="font-medium text-blue-500">
+						<a href="https://github.com/Friends-of-Monika" target="_blank"> Friends of Monika </a>
+					</span>
+					❤️
+				</p>
+			</div>
+		</div>
+	</div>
+</div>