refactor login page, change routes to token-based, add service classes

src/lib/components/Panel.svelte

@@ -0,0 +1,17 @@
+<style>
+	.panel {
+		@apply overflow-hidden;
+		@apply rounded-lg;
+	}
+</style>
+
+<script lang="ts">
+	export let padding = 'p-6';
+	export let shadow = true;
+	let classNames = '';
+	export { classNames as class };
+</script>
+
+<div class:shadow class="{classNames} panel {padding}">
+	<slot />
+</div>