add device app

device/admin.py

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+from django.contrib import admin
+
+# Register your models here.

device/apps.py

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+from django.apps import AppConfig
+
+
+class DeviceConfig(AppConfig):
+    name = 'device'

device/models.py

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+from django.db import models
+
+# Create your models here.

device/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

device/views.py

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+from django.shortcuts import render
+
+# Create your views here.