Implement Basic ORM Functions

[sadlil]

As first version of ORM lets start implementing with following

• Open Database connection ie. - http://gorm.io/docs/connecting_to_the_database.html
• Basic CRUDs operations ie. - http://gorm.io/docs/create.html, http://gorm.io/docs/query.html, http://gorm.io/docs/update.html