v3: added onboarding email on account creation

src/model.ts

@@ -92,6 +92,7 @@ export interface PublicUser {
   avatarMime?: string;
   description?: string;
   invitedByUsername?: string;
+  email?: string;
 }
 
 // User is the same shape as PublicUser in the frontend; they differ only
@@ -464,6 +465,7 @@ export interface RegisterRequest {
   username: string;
   password: string;
   inviteToken: string;
+  email: string;
 }
 
 export interface CreateUrlDumpRequest {
@@ -505,4 +507,5 @@ export interface ReorderPlaylistRequest {
 
 export interface UpdateUserRequest {
   description?: string;
+  email?: string;
 }