feat: create README.md file

refactor: add user id from header

refactor: fix double token object

refactor: delete unused files

feat: create new method for checking user balance

refactor: modify middleware, create middleware interface, restructuring files, fixing cycle import

feat: add init function and modify main function

refactor: add missing constructor

refactor: modify gorm type

feat: create middleware

refactor: delete unused file

refactor: modify CreateUser method and create Login method

feat: create new test

feat: create user controller

refactor: modify go mod