Migrate some models in a new app

dcc/metadata/models.py

@@ -0,0 +1,31 @@
+from django.db import models
+from django_countries.fields import CountryField
+
+
+class Manufacturer(models.Model):
+    name = models.CharField(max_length=128, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+class Company(models.Model):
+    name = models.CharField(max_length=128, unique=True)
+    country = CountryField()
+
+    class Meta:
+        verbose_name_plural = "Companies"
+
+    def __str__(self):
+        return self.name
+
+
+class Decoder(models.Model):
+    name = models.CharField(max_length=128, unique=True)
+    manufacturer = models.ForeignKey(
+        Manufacturer,
+        on_delete=models.CASCADE)
+    version = models.CharField(max_length=64, blank=True)
+
+    def __str__(self):
+        return "{0} - {1}".format(self.manufacturer, self.name)