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.

preinfo/admin.py

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+from django.contrib import admin
+
+# Register your models here.

preinfo/apps.py

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+from django.apps import AppConfig
+
+
+class PreinfoConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "preinfo"

preinfo/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

users/admin.py

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+from django.contrib import admin
+
+# Register your models here.

users/apps.py

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+from django.apps import AppConfig
+
+
+class UsersConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "users"

users/tests.py

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+from django.test import TestCase
+
+# Create your tests here.