fix(client): add enterkeyhint to ChipInput for mobile keyboards

Mobile keyboards, such as on Android, may not show a functioning
Enter key by default in this input. Adding enterkeyhint="enter"
allows users to properly submit chips like authors in the
metadata editor.

Closes #310

client/src/components/ui/ChipInput.vue

@@ -89,6 +89,7 @@ onUnmounted(() => clearTimeout(debounceTimer))
       </span>
       <input
         v-model="query"
+        enterkeyhint="enter"
         class="flex-1 min-w-24 bg-transparent outline-none placeholder:text-muted-foreground/50 disabled:cursor-not-allowed"
         :placeholder="placeholder ?? (modelValue.length === 0 ? 'Type and press Enter to add' : 'Press Enter to add')"
         :disabled="props.disabled"