Event Attendee Adding

[seesjays]

What type of PR is this? (check applicable) 🚧

• [ ] ♻️ Refactor
• [X] ✨ Feature
• [ ] 🐛 Bug Fix
• [ ] 👷 Optimization
• [ ] 📝 Documentation Update
• [ ] 🔖 Release
• [ ] 🚩 Other

Describe your PR request 🔥

Adds a form to the dynamic event pages that allows officers to add attendees to events.

The form features a UI that changes depending on whether the contact exists in members already.

Mobile & Desktop Screenshots/Recordings 📷