feat: improve store and model typing

src/models/emailUpdate.ts

@@ -1,8 +1,13 @@
 import AbstractModel from './abstractModel'
 
-export default class EmailUpdateModel extends AbstractModel {
+interface IEmailUpdate {
 	newEmail: string
 	password: string
+}
+
+export default class EmailUpdateModel extends AbstractModel implements IEmailUpdate {
+	declare newEmail: string
+	declare password: string
 
 	defaults() {
 		return {