Add DeviceDetector and postres_cursor

Gemfile

@@ -63,6 +63,9 @@ gem "countries"
 # Authorization library
 gem "pundit"
 
+# User agent parsing
+gem "device_detector"
+
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
   gem "debug", platforms: %i[ mri windows ], require: "debug/prelude"
@@ -87,3 +90,7 @@ group :test do
   gem "capybara"
   gem "selenium-webdriver"
 end
+
+gem "sentry-rails", "~> 6.1"
+
+gem "postgresql_cursor", "~> 0.6.9"