Add IntelliJ IDEA project configuration files

This commit adds IntelliJ IDEA-specific configuration files for the project, including module setup, version control integration, inspection profiles, and workspace settings. These files facilitate development environment configuration for contributors using IntelliJ IDEA.

booking/forms.py

@@ -0,0 +1,19 @@
+from django import forms
+
+from booking.models import Booking
+
+
+class BookingBaseForm(forms.ModelForm):
+    """
+    Base form for booking-related forms.
+    This can be extended by other booking forms.
+    """
+
+    class Meta:
+        fields = '__all__'
+        model = Booking
+
+class BookingCreateForm(BookingBaseForm):
+
+    class Meta(BookingBaseForm.Meta):
+        fields = ['number', 'vehicles', 'container_type', 'container_count', 'carrier', 'line', 'container_number']