feat(server): email notifications (#8447)

* feat(server): add `react-mail` as mail template engine and `nodemailer`

* feat(server): add `smtp` related configs to `SystemConfig`

* feat(web): add page for SMTP settings

* feat(server): add `react-email.adapter`

This adapter render the React-Email into HTML and plain/text email.
The output is set as the body of the email.

* feat(server): add `MailRepository` and `MailService`

Allow to use the NestJS-modules-mailer module to send SMTP emails.
This is the base transport for the `NotificationRepository`

* feat(server): register the job dispatcher and Job for async email

This allows to queue email sending jobs for the `EmailService`.

* feat(server): add `NotificationRepository` and `NotificationService`

This act as a middleware to properly route the notification to the right transport.
As POC I've only implemented a simple SMTP transport.

* feat(server): add `welcome` email template

* feat(server): add the first notification on `createUser` in `UserService`

This trigger an event for the `NotificationRepository` that once processes
by using the global config and per-user config will carry the payload to the right notification transport.

* chore: clean up

* chore: clean up web

* fix: type errors"

* fix package lock

* fix mail sending, option to ignore certs

* chore: open api

* chore: clean up

* remove unused import

* feat: email feature flag

* chore: remove unused interface

* small styling

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>
Co-authored-by: Daniel Dietzler <mail@ddietzler.dev>
Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

server/package.json

@@ -29,7 +29,8 @@
     "typeorm:migrations:revert": "typeorm migration:revert -d ./dist/database.config.js",
     "typeorm:schema:drop": "typeorm query -d ./dist/database.config.js 'DROP schema public cascade; CREATE schema public;'",
     "typeorm:schema:reset": "npm run typeorm:schema:drop && npm run typeorm:migrations:run",
-    "sql:generate": "node ./dist/utils/sql.js"
+    "sql:generate": "node ./dist/utils/sql.js",
+    "email:dev": "email dev -p 3050 --dir src/emails"
   },
   "dependencies": {
     "@nestjs/bullmq": "^10.0.1",
@@ -47,6 +48,7 @@
     "@opentelemetry/context-async-hooks": "^1.24.0",
     "@opentelemetry/exporter-prometheus": "^0.51.0",
     "@opentelemetry/sdk-node": "^0.51.0",
+    "@react-email/components": "^0.0.17",
     "@socket.io/postgres-adapter": "^0.3.1",
     "archiver": "^7.0.0",
     "async-lock": "^1.4.0",
@@ -72,9 +74,11 @@
     "nest-commander": "^3.11.1",
     "nestjs-cls": "^4.3.0",
     "nestjs-otel": "^5.1.5",
+    "nodemailer": "^6.9.13",
     "openid-client": "^5.4.3",
     "pg": "^8.11.3",
     "picomatch": "^4.0.0",
+    "react-email": "^2.1.2",
     "reflect-metadata": "^0.2.0",
     "rxjs": "^7.8.1",
     "sanitize-filename": "^1.6.3",
@@ -102,7 +106,9 @@
     "@types/mock-fs": "^4.13.1",
     "@types/multer": "^1.4.7",
     "@types/node": "^20.5.7",
+    "@types/nodemailer": "^6.4.14",
     "@types/picomatch": "^2.3.3",
+    "@types/supertest": "^6.0.0",
     "@types/ua-parser-js": "^0.7.36",
     "@typescript-eslint/eslint-plugin": "^7.0.0",
     "@typescript-eslint/parser": "^7.0.0",