Add teamId to channel entity

[zemberdotnet]

Description

This PR adds the teamId property to the channel entity. This will enable creating mapped relationships based on webhook urls.

For a specific example, consider this response from the DigitalOcean API:

"slack": [
    {
        "channel": "Production Alerts",
        "url": "https://hooks.slack.com/services/T1234567/AAAAAAAA/ZZZZZZ%22"
    }
]

This response features the channel name (which is a unique identifier for a channel within a team), and the teamId in the url T1234567. Currently, a mapped relationship couldn't be made because an account may have multiple teams which would make the channel name insufficiently unique. If the teamId property is present on the channel, then a mapped relationships could be made using the combination of teamId and name to uniquely identify the channel to map to.

[j1-internal-automation]

🚀 PR was released in v5.0.0 🚀