Implemented the test-mail endpoint via a new mailcontroller

ref #124

src/controllers/MailController.ts

@@ -0,0 +1,26 @@
+import { Authorized, JsonController, Post } from 'routing-controllers';
+import { OpenAPI, ResponseSchema } from 'routing-controllers-openapi';
+import { config } from '../config';
+import { Mailer } from '../mailer';
+import { ResponseEmpty } from '../models/responses/ResponseEmpty';
+
+
+@JsonController('/mails')
+@OpenAPI({ security: [{ "AuthToken": [] }, { "RefreshTokenCookie": [] }] })
+export class MailController {
+
+	private mailer: Mailer;
+
+	constructor() {
+		this.mailer = new Mailer();
+	}
+
+	@Post('/test')
+	@Authorized(["MAIL:CREATE"])
+	@ResponseSchema(ResponseEmpty, { statusCode: 200 })
+	@OpenAPI({ description: 'Sends a test email to the configured from-address.' })
+	async get() {
+		await this.mailer.sendTestMail(config.mail_from);
+		return new ResponseEmpty();
+	}
+}