feat(api): rename track type to library

Related to #1922

- rename library model fields

api/libretime_api/storage/models/library.py

@@ -0,0 +1,21 @@
+from django.db import models
+
+
+class Library(models.Model):
+    name = models.CharField(
+        max_length=255,
+        blank=True,
+        null=True,
+        db_column="type_name",
+    )
+    code = models.CharField(max_length=16, unique=True)
+    description = models.CharField(max_length=255, blank=True, null=True)
+    visible = models.BooleanField(
+        blank=True,
+        default=True,
+        db_column="visibility",
+    )
+
+    class Meta:
+        managed = False
+        db_table = "cc_track_types"