first commit, i i have no idea what i have done

server/internal/db/db.go

@@ -0,0 +1,20 @@
+package db
+
+import (
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+
+	"smoop-api/internal/models"
+)
+
+func Open(dsn string) (*gorm.DB, error) {
+	return gorm.Open(postgres.Open(dsn), &gorm.Config{})
+}
+
+func AutoMigrate(db *gorm.DB) error {
+	return db.AutoMigrate(
+		&models.User{},
+		&models.Device{},
+		&models.Record{},
+	)
+}