move uncloud a layer up

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

uncloud/uncloud_vm/models.py

@@ -0,0 +1,12 @@
+from django.db import models
+
+
+class VM(models.Model):
+    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
+
+    cores = models.IntegerField()
+    ram = models.FloatField()
+
+
+class VMDisk(models.Model):