adding support for a collecto config file.

/scrutiny/config/collector.yaml

Adding ability to specify host identifier (label), that is updated on every collector run.
Can be specified by `host-id` CLI or `COLLECTOR_HOST_ID` env var.

Created a config class, interface and associated tests.

Created a "TransformDetectedDrives" function, that will allow users to insert drives not detected by Smarctl --scan, ignore drives that they dont want, and override smartctl device type.

Added Upsert functionality when registering devices.

Replaced "github.com/jinzhu/gorm" with "gorm.io/gorm" (ORM location moved, was using incorrect lib url)
Removed machineid library.

webapp/backend/pkg/models/db/smart.go

@@ -3,7 +3,7 @@ package db
 import (
 	"github.com/analogj/scrutiny/webapp/backend/pkg/metadata"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models/collector"
-	"github.com/jinzhu/gorm"
+	"gorm.io/gorm"
 	"time"
 )