fix(component): emit keydown event as event argument to access specific key from consuming apps (#83)

Co-authored-by: Sarah Leventhal <[email protected]>

Author: Umi8Umi

src/component.vue

@@ -7,8 +7,8 @@
     @change="onChange"
     @blur="$emit('blur')"
     @focus="$emit('focus')"
-    @keyup="$emit('keyup')"
-    @keydown="$emit('keydown')"
+    @keyup="$emit('keyup', $event)"
+    @keydown="$emit('keydown', $event)"
   />
 </template>