chore: move backend to hono + typescript (#558)

* feat: setup secure presigned uploads and downloads

* clean up

* update lock

* Get presigned url finally working

* 557: Migrate backend to hono + ts

* chore: update Dockerfile and package.json for backend configuration

* add dev command

* remove unused packages

* Enhance backend API and frontend components for course management

- Updated CORS configuration in the backend to allow specific methods and headers.
- Refactored lesson download endpoint to use a new route for PDF downloads.
- Removed unused certificate download functionality from the lesson router.
- Updated frontend components to reflect changes in API endpoints and improve video upload functionality.
- Introduced new video upload component and adjusted video handling in lesson materials.
- Cleaned up unnecessary imports and optimized component structure for better performance.

* PR cleanups

* Enhance email configuration by adding SMTP_SENDER environment variable

- Updated docker-compose.yaml to include SMTP_SENDER.
- Modified Dockerfile to accept SMTP_SENDER as an argument.
- Updated environment schema in env.ts to define SMTP_SENDER as optional.
- Adjusted mail service to use SMTP_SENDER for the email 'from' field.
- Updated documentation to reflect the new SMTP_SENDER variable.

* Remove debug log statement from sendEmail function

---------

Co-authored-by: Iniubong Obonguko <iniubongobonguko2018@gmail.com>

apps/dashboard/src/routes/api/email/invite/+server.ts

@@ -0,0 +1,49 @@
+import { json } from '@sveltejs/kit';
+import sendEmail from '$mail/sendEmail';
+
+// API to send invite to teacher
+export async function POST({ fetch, request }) {
+  const body = await request.json();
+  const { org, email } = body;
+
+  console.log('/POST api/email/invite', body);
+
+  if (!org || !Object.keys(org).length || !email) {
+    return json(
+      { success: false, message: 'Org data and Teacher name are required' },
+      { status: 400 }
+    );
+  }
+
+  const { id, name, siteName } = org;
+
+  const origin = request.headers.get('origin');
+  const inviteData = JSON.stringify({
+    email,
+    orgId: id,
+    orgSiteName: siteName
+  });
+  const inviteLink = `${origin}/invite/t/${encodeURIComponent(btoa(inviteData))}`;
+  console.log('inviteData', inviteData);
+
+  const emailData = [
+    {
+      from: `"Best from ClassroomIO" <notify@mail.classroomio.com>`,
+      to: email,
+      subject: `Join ${name} on ClassroomIO 😃`,
+      content: `
+    <p>Hey there,</p>
+      <p> You have been invited to join ${name} on ClassroomIO 🎉🎉🎉.</p>
+      <div>
+        <a class="button" href="${inviteLink}">Accept Invitation</a>
+      </div>
+    `
+    }
+  ];
+  await sendEmail(fetch)(emailData);
+
+  return json({
+    success: true,
+    message: 'Email sent'
+  });
+}