feat: Refactor EventEdit and EventFightList components for improved UI and functionality

- Enhanced EventEdit component with AlertDialog for delete confirmation.
- Added Menubar component to EventFightList for batch editing options.
- Updated alert-dialog components to streamline props and improve reactivity.
- Refactored menubar components for better structure and usability.
- Improved accessibility and code readability across various components.

src/components/ui/menubar/menubar-group-heading.svelte

@@ -0,0 +1,19 @@
+<script lang="ts">
+	import { Menubar as MenubarPrimitive } from "bits-ui";
+	import { cn } from "$lib/components/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		inset = undefined,
+		...restProps
+	}: MenubarPrimitive.GroupHeadingProps & {
+		inset?: boolean;
+	} = $props();
+</script>
+
+<MenubarPrimitive.GroupHeading
+	bind:ref
+	class={cn("px-2 py-1.5 text-sm font-semibold", inset && "pl-8", className)}
+	{...restProps}
+/>