feat(itam): Add device model

!10 closes #12

app/itam/models/device_models.py

@@ -0,0 +1,33 @@
+from django.contrib.auth.models import User
+from django.db import models
+
+from itam.models.device_common import DeviceCommonFieldsName
+
+from access.models import TenancyObject
+
+from core.mixin.history_save import SaveHistory
+from core.models.manufacturer import Manufacturer
+
+
+
+class DeviceModel(DeviceCommonFieldsName, SaveHistory):
+
+
+    class Meta:
+
+        ordering = [
+            'manufacturer',
+            'name',
+        ]
+
+    manufacturer = models.ForeignKey(
+        Manufacturer,
+        on_delete=models.CASCADE,
+        default = None,
+        null = True,
+        blank= True
+    )
+
+    def __str__(self):
+
+        return self.manufacturer.name + ' ' + self.name