add feedback endpoint (#28) and some other stuff

src/lib/components/Input/Input.svelte

@@ -11,6 +11,7 @@
 	export let required = false;
 	export let disabled = false;
 	export let readonly = false;
+	export let checked = false;
 	export let size: 'xs' | 'sm' | 'md' | 'lg' = 'md';
 	export let pickyWidth = true;
 	export let containerClass = '';
@@ -85,6 +86,7 @@
 					{name}
 					{type}
 					{value}
+					{checked}
 					{placeholder}
 					{required}
 					{disabled}