[Components] enginemailer

# enginemailer
## URLs
- https://enginemailer.zendesk.com/hc/en-us#apis
## Webhook Sources
### new-subscriber-instant
#### Description
Emit new event when a subscriber is added to a list. Requires selecting a specific email list.
### new-campaign-instant
#### Description
Emit new event when an email campaign is created. Useful for tracking new marketing campaigns.
### new-email-open-instant
#### Description
Emit new event when a subscriber opens an email from a campaign. Requires selecting a campaign.
## Actions
### create-subscriber
#### Description
Add a new subscriber to an email list. Requires an email address and a selected list.
### send-campaign
#### Description
Send an email campaign to a specified list of subscribers. Requires campaign ID and recipient list.
### update-subscriber
#### Description
Update a subscriber's details (e.g., name, email, custom fields) in a selected list.