Adding tool-tip and updating color for sidebar toggle button. (#2044)

src/lib/components/ExpandNavigation.svelte

@@ -10,9 +10,10 @@
 
 <button
 	onclick={onClick}
+	title={isCollapsed ? "Expand sidebar" : "Collapse sidebar"}
 	class="{classNames} group flex h-16 w-6 flex-col items-center justify-center -space-y-1 outline-none *:h-3 *:w-1 *:rounded-full *:hover:bg-gray-300 dark:*:hover:bg-gray-600 max-md:hidden {!isCollapsed
-		? '*:bg-gray-200/70 dark:*:bg-gray-800'
-		: '*:bg-gray-200 dark:*:bg-gray-700'}"
+		? '*:bg-gray-400 dark:*:bg-gray-500'
+		: '*:bg-gray-400 dark:*:bg-gray-500'}"
 	name="sidebar-toggle"
 	aria-label="Toggle sidebar navigation"
 >