Add documentation and source

Added documentation, source and extra files.

source/orm/library/models/genre.py

@@ -0,0 +1,23 @@
+from uuid import uuid4
+
+from django.db import models
+
+
+class Genre(models.Model):
+    """
+    Book genre.
+
+    """
+
+    uuid = models.UUIDField(default=uuid4, db_index=True, verbose_name="UUID")
+    code_name = models.CharField(max_length=64, blank=False, unique=True, verbose_name="code name")
+    name = models.CharField(max_length=64, blank=False, verbose_name="name")
+    description = models.TextField(blank=True, verbose_name="description")
+    creation_date = models.DateTimeField(auto_now_add=True, verbose_name="creation date")
+
+    class Meta:
+        verbose_name = "genre"
+        verbose_name_plural = "genres"
+
+    def __str__(self):
+        return f"{self.name}"