examples: v back-end example for vweb (#15141)

examples/vweb_orm_jwt/src/databases/config_datases_mysql.v

@@ -0,0 +1,18 @@
+module databases
+
+import mysql
+import os
+
+pub fn create_db_connection() ?mysql.Connection {
+	mut db := mysql.Connection{
+		host: os.getenv('DB_HOST')
+		port: os.getenv('DB_PORT').u32()
+		username: os.getenv('DB_USERNAME')
+		password: os.getenv('DB_PASSWORD')
+		dbname: os.getenv('DB_NAME')
+	}
+
+	db.connect() or { println(err) }
+
+	return db
+}