feat(contacts): store contact submissions

config/settings/base.py

@@ -50,6 +50,7 @@ LOCAL_APPS = [
     "apps.reports",
     "apps.logs",
     "apps.demos",
+    "apps.contacts",
 ]
 
 INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS
@@ -141,6 +142,7 @@ REST_FRAMEWORK = {
         "login_password": "5/10m",
         "login_otp": "5/10m",
         "demo_start": os.getenv("DEMO_START_RATE_LIMIT", "10/hour"),
+        "contact_submission": os.getenv("CONTACT_SUBMISSION_RATE_LIMIT", "5/hour"),
     },
     "EXCEPTION_HANDLER": "core.exceptions.handlers.exception_handler",
 }