[Components] smartlead

# smartlead
## URLs
- https://api.smartlead.ai/reference/welcome
## Webhook Sources
### new-lead-instant
#### Description
Emit new event when a new lead is captured in a Smartlead campaign. Requires campaign selection.
### new-campaign-instant
#### Description
Emit new event when a new outreach campaign is created in Smartlead. No configuration required.
### new-reply-instant
#### Description
Emit new event when a lead replies to an email in any campaign. Optional filters: campaign, sender email.
## Actions
### create-lead
#### Description
Create a new lead in a specified Smartlead campaign. Requires campaign ID and lead details (email, name, etc.).
### start-campaign
#### Description
Start an existing campaign in Smartlead. Requires campaign ID.
### add-leads-to-campaign
#### Description
Add one or more existing leads to a campaign. Requires campaign ID and lead IDs.