feat: add tables for support github teams

[jaorr95]

Description

Add schema to support to teams and teams_memberships stream.

Related PR: faros-ai/airbyte-connectors#1112

Type of change

(Delete what does not apply)

• New feature (non-breaking change which adds functionality)

Checklist

(Delete what does not apply)

• Have you checked to there aren't other open Pull Requests for the same update/change?
• Have you lint your code locally before submission?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you successfully run tests with your changes locally?

[thomas-gerber]

Thank you for your contribution @jaorr95 ;
@ted-faros I am thinking of recommending changes to keep the CE models a subset of our paid product, so that we can easily automate schema upgrades in the future.
i.e.

• vcs_Team:
  • remove slug, privacy, url
  • base id on source, uid
• vcs_TeamMember:
  • rename to vcs_TeamMembership
  • remove state, role, source

@ted-faros what do you think?
@jaorr95 would that be acceptable?

[ted-faros]

@thomas-gerber I agree.

[jaorr95]

@thomas-gerber i made the changes that you suggested

[ellipsis-dev]

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[thomas-gerber]

Confirmed that it upgrades properly.

[thomas-gerber]

Verified the compatibility with our data models
Verified it upgrades properly