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.

accounts/models.py

@@ -0,0 +1,44 @@
+from django.contrib.auth.models import AbstractUser
+from django.db import models
+
+class ClientPermission(models.Model):
+    class Meta:
+        managed = True
+        default_permissions = ()
+        permissions = (
+            ('can_book_container', 'Can book container'),
+            ('can_view_bookings', 'Can view bookings'),
+            ('can_manage_company_users', 'Can manage company users'),
+        )
+
+
+class DepotUser(AbstractUser):
+
+    phone_number = models.CharField(max_length=15, blank=True, null=True)
+    email = models.EmailField(unique=True, blank=False, null=False)
+    company = models.ForeignKey(
+        'common.CompanyModel',
+        on_delete=models.CASCADE,
+        related_name='user_lines',
+        blank=True,
+        null=True
+    )
+    line = models.ForeignKey(
+        'common.LinesModel',
+        on_delete=models.CASCADE,
+        related_name='user_lines',
+        blank=True,
+        null=True
+    )
+
+    company_permissions = models.ManyToManyField('ClientPermission')
+    new_field1 = models.BooleanField(default=False)
+    is_company_admin = models.BooleanField(default=False)
+
+    def has_company_perm(self, perm_codename):
+        if self.is_superuser:
+            return True
+        return self.company_permissions.filter(
+            codename=perm_codename,
+            is_client_permission=self.company
+        ).exists()