feat(agent): report btrfs filesystems as storage pools (#2315)

Co-authored-by: henrygd <hank@henrygd.me>

internal/migrations/1788955200_pool_updates.go

@@ -0,0 +1,27 @@
+package migrations
+
+import (
+	"github.com/pocketbase/pocketbase/core"
+	m "github.com/pocketbase/pocketbase/migrations"
+)
+
+func init() {
+	m.Register(func(app core.App) error {
+		c, err := app.FindCollectionByNameOrId("zfs_pools")
+		if err != nil {
+			return err
+		}
+		c.Fields.Add(&core.TextField{Name: "display_name"})
+		c.Fields.Add(&core.BoolField{Name: "raw"})
+		return app.Save(c)
+	}, func(app core.App) error {
+		c, err := app.FindCollectionByNameOrId("zfs_pools")
+		if err != nil {
+			return err
+		}
+		c.Fields.RemoveByName("display_name")
+		c.Fields.RemoveByName("raw")
+
+		return app.Save(c)
+	})
+}