[Feature Request]:add an event form

[geromegrignon]

Relevant Scope

angular application

Description

Add an event form on the event page to make it more straightful for people to contribute.
The form should provide data to be reviewed before adding it to the list.

The first version should care about adding events to existing communities only.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Do you want to contribute with a pull request?

No