Add option to link an external registration provider for events

js/src/graphql/event.ts

@@ -21,6 +21,7 @@ const FULL_EVENT_FRAGMENT = gql`
     status
     visibility
     joinOptions
+    externalParticipationUrl
     draft
     language
     category
@@ -121,6 +122,7 @@ export const FETCH_EVENT_BASIC = gql`
       id
       uuid
       joinOptions
+      externalParticipationUrl
       participantStats {
         going
         notApproved
@@ -199,6 +201,7 @@ export const CREATE_EVENT = gql`
     $status: EventStatus
     $visibility: EventVisibility
     $joinOptions: EventJoinOptions
+    $externalParticipationUrl: String
     $draft: Boolean
     $tags: [String]
     $picture: MediaInput
@@ -220,6 +223,7 @@ export const CREATE_EVENT = gql`
       status: $status
       visibility: $visibility
       joinOptions: $joinOptions
+      externalParticipationUrl: $externalParticipationUrl
       draft: $draft
       tags: $tags
       picture: $picture
@@ -247,6 +251,7 @@ export const EDIT_EVENT = gql`
     $status: EventStatus
     $visibility: EventVisibility
     $joinOptions: EventJoinOptions
+    $externalParticipationUrl: String
     $draft: Boolean
     $tags: [String]
     $picture: MediaInput
@@ -269,6 +274,7 @@ export const EDIT_EVENT = gql`
       status: $status
       visibility: $visibility
       joinOptions: $joinOptions
+      externalParticipationUrl: $externalParticipationUrl
       draft: $draft
       tags: $tags
       picture: $picture