Added instructor availability model and admin

cntmanage/flightslot/migrations/0028_alter_availability_options.py

@@ -0,0 +1,17 @@
+# Generated by Django 5.2.8 on 2025-12-02 10:59
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('flightslot', '0027_alter_weekpreference_student_availability'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='availability',
+            options={'verbose_name': 'Instructor Availability', 'verbose_name_plural': 'Instructor Availabilities'},
+        ),
+    ]