feat(contacts): store contact submissions

apps/contacts/admin.py

@@ -0,0 +1,56 @@
+from django.contrib import admin
+
+from apps.contacts.models import ContactSubmission
+from core.admins.base import BaseAdmin, SoftDeleteListFilter
+
+
+@admin.register(ContactSubmission)
+class ContactSubmissionAdmin(BaseAdmin):
+    list_display = (
+        "id",
+        "full_name",
+        "email",
+        "mobile",
+        "status",
+        "created_at",
+        "is_deleted",
+    )
+    list_filter = (
+        SoftDeleteListFilter,
+        "status",
+        "created_at",
+    )
+    search_fields = (
+        "first_name",
+        "last_name",
+        "email",
+        "mobile",
+        "message",
+    )
+    readonly_fields = (
+        "id",
+        "ip_address",
+        "user_agent",
+        "created_at",
+        "updated_at",
+        "created_by",
+        "updated_by",
+    )
+    fields = (
+        "first_name",
+        "last_name",
+        "email",
+        "mobile",
+        "message",
+        "status",
+        "ip_address",
+        "user_agent",
+        "created_at",
+        "updated_at",
+        "created_by",
+        "updated_by",
+    )
+
+    @admin.display(description="Full name")
+    def full_name(self, obj):
+        return f"{obj.first_name} {obj.last_name}".strip()