Delete: Allow passing live parameter

[vfonic]

I've been constantly having issues with Webflow CMS items not being properly synced.
I realized that removing the items is the most problematic.

I ended up publishing for every "delete".
I finally found a "cheaper" way to achieve this.
If we delete without live: true, the item will stay visible on the site until the site is published again.
If we delete with live: true, the item will be set as draft and not visible on the site, but it will be visible in the Webflow CMS.
We can call delete with live: true to remove it from the site (and make it a draft) and then call delete again, without live: true to remove the item from Webflow completely:

client.delete_item({ '_cid' => collection['_id'], '_id' => webflow_item_id }, live: true)
client.delete_item({ '_cid' => collection['_id'], '_id' => webflow_item_id })

To allow this functionality, I need the support for live: keyword argument to delete_item method.