Stage 1

[mihhu]

Implemented a web SDK that exposes the following functionality:

• A generic React component encapsulating the iframe API - JitsiMeeting
• Another React component that wraps the former, but it's auto configured for JaaS (the domain defaults to 8x8.vc, the tenant is required) - JaaSMeeting
• A framework agnostic way to dynamically load the external API (support fo JaaS included) - initExternal
• TypeScript types for JitsiMeetExternalAPI - ./types

[saghul]

Excellent work @mihhu !