Fix-ish frontend models, a generator and a generate command

frontend-reactive/app/models/account.ts

@@ -1,13 +1,13 @@
 import Model, { attr, hasMany, type AsyncHasMany } from '@ember-data/model'
-import type RemoteServerModel from './remote-server'
 import type CustomAccountFieldModel from './custom-account-field'
 import type MediaMetadataModel from './media-metadata'
+import type OriginServer from './origin-server'
 
-export default class AccountModel extends Model {
+export default class Account extends Model {
   @attr declare createdAt: Date
   @attr declare updatedAt: Date
   @attr declare username: string
-  @attr declare originServer: RemoteServerModel
+  @attr declare originServer: OriginServer
   @attr declare originServerId: number
   @attr declare displayName: string
   @hasMany('custom-account-field')
@@ -28,3 +28,9 @@ export default class AccountModel extends Model {
   @attr declare pronouns: Array<string>
   @attr declare roles: Array<string>
 }
+
+declare module 'ember-data/types/registries/model' {
+  export default interface ModelRegistry {
+    account: Account
+  }
+}