Add Hybrid Events functionality

[YonksTEAM]

Describe the solution you'd like

We want to use Unlock-Protocol for hosting Hybrid Events (IRL + online options). Meetup.com is the premiere online platform for hosting events and they implemented this feature within last 6-12 months on their platform (read more about it on their blog post ==> https://www.meetup.com/blog/introducing-the-hybrid-events-feature-for-meetup-pro/)

Requested Functionality / Workflow

1. Requirement: user must select IRL or Online option when registering for event (IRL events typically have a meeting capacity that isn't a consideration for online events).
2. Specify capacity for IRL separately from online events (should have capacity max for IRL and potentially unlimited option for online)

Conversation History

• This is something that I brought up on a previous Unlock-Protocol weekly call but hadn't submitted official feature request until now.