feat: remove defer (#243)

* working on moving the email logic to the backend

* Moved nodemailer to the backend

* uninstall defer

* updated relative import path in tsconfig

* working on the zod validation

* Merge branch 'main' into send-email

* fixed the zod import issue

* fixed the zod import issue

* updated the env example files

* docs: update README.md (#249)

* fix: handle catex error

* chore: remove fly.io github action

* Update README.md

Updated the Readme to reflect changes made to the emailing flow

---------

Co-authored-by: Rotimi Best <best@classroomio.com>

* chore: wrapp up email sending

---------

Co-authored-by: Rotimi Best <best@classroomio.com>

apps/dashboard/src/lib/components/Course/components/Lesson/Exercise/ViewMode.svelte

@@ -25,7 +25,6 @@
     triggerSendEmail
   } from '$lib/utils/services/notification/notification';
   import { lesson } from '../store/lessons';
-  import { onMount } from 'svelte';
   import { browser } from '$app/environment';
 
   export let preview: false;