Add Chat Badges features

[Scorfly]

From twitch changelog : 2021‑05‑28

Twitch API endpoints have been added for chat badges.

• Get Channel Chat Badges
• Get Global Chat Badges

EventSub subscription type updates.

• Channel Subscription End has moved from public beta to v1. This was previously known as “Channel Unsubscribe.”
• Channel Subscription Gift has been added as a public beta.

[coveralls]

Pull Request Test Coverage Report for Build 891038129

• 20 of 20 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-3.8%) to 96.203%

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Totals
Change from base Build 880060004:	-3.8%
Covered Lines:	988
Relevant Lines:	1027

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💛 - Coveralls