Added sample .env

.env.example

@@ -0,0 +1,22 @@
+# TODO Fill me up
+
+HOST=
+PORT=
+
+MYSQL_USER=
+MYSQL_DATABASE=
+MYSQL_HOST=
+MYSQL_PORT=
+MYSQL_PASSWORD=
+
+REDIS_HOST=
+REDIS_PORT=
+
+JWT_SECRET_KEY=
+
+MAIL_SERVER=
+MAIL_PORT=
+MAIL_USERNAME=
+MAIL_PASSWORD=
+MAIL_USE_TLS=
+MAIL_DEFAULT_SENDER=