feat: implement invitation email functionality for organization creation

- Added `sendInvitationEmail` function to send invitation emails when a new organization is created in the cloud environment.
- Updated email template to enhance the invitation message and included a direct link for users to accept the invitation.
- Refactored email sending logic in the user router to utilize the new invitation email rendering function.
- Improved organization invitation email design for better user experience.

packages/server/src/verification/send-verification-email.tsx

@@ -1,4 +1,5 @@
 import { renderAsync } from "@react-email/components";
+import InvitationEmail from "../emails/emails/invitation";
 import VerifyEmailTemplate from "../emails/emails/verify-email";
 import { sendEmailNotification } from "../utils/notifications/utils";
 
@@ -51,3 +52,38 @@ export const sendVerificationEmail = async ({
 		text: html,
 	});
 };
+
+export const renderInvitationEmail = async ({
+	email,
+	inviteLink,
+	organizationName,
+}: {
+	email: string;
+	inviteLink: string;
+	organizationName: string;
+}) => {
+	return renderAsync(
+		InvitationEmail({
+			inviteLink,
+			toEmail: email,
+			organizationName,
+		}),
+	);
+};
+
+export const sendInvitationEmail = async ({
+	email,
+	inviteLink,
+	organizationName,
+}: {
+	email: string;
+	inviteLink: string;
+	organizationName: string;
+}) => {
+	const html = await renderInvitationEmail({ email, inviteLink, organizationName });
+	await sendEmail({
+		email,
+		subject: `You've been invited to join ${organizationName} on Dokploy`,
+		text: html,
+	});
+};