feat/role based access (#50)

* feat: add roles based access

* feat: update roles env + todo

* feat: add roles to update profile

* feat: add role based oauth

* feat: validate role for a given token

server/db/user.go

@@ -17,6 +17,7 @@ type User struct {
 	CreatedAt       int64 `gorm:"autoCreateTime"`
 	UpdatedAt       int64 `gorm:"autoUpdateTime"`
 	Image           string
+	Roles           string
 }
 
 // SaveUser function to add user even with email conflict