make reported user nullable

src/lib/components/Input/Input.svelte

@@ -9,6 +9,7 @@
 	export let placeholder: string | null = null;
 	export let required = false;
 	export let disabled = false;
+	export let readonly = false;
 	export let size: 'xs' | 'sm' | 'md' | 'lg' = 'md';
 	export let pickyWidth = true;
 
@@ -85,6 +86,7 @@
 					{placeholder}
 					{required}
 					{disabled}
+					{readonly}
 					bind:this={inputElement}
 					autocomplete="off"
 					on:input={(e) => {