feat: add datadog integration and lograge JSON logs formatting

config/initializers/datadog.rb

@@ -0,0 +1,6 @@
+if ENV['DATADOG_ENABLED'] == 'true'
+  Datadog.configure do |c|
+    # This will activate auto-instrumentation for Rails
+    c.use :rails
+  end
+end

config/initializers/lograge.rb

@@ -0,0 +1,14 @@
+Rails.application.configure do
+  config.lograge.enabled = true
+
+  # Generate log in JSON
+  config.lograge.formatter = Lograge::Formatters::Json.new
+  config.lograge.custom_options = lambda do |event|
+    {
+      :ddsource => ["ruby"],
+      :time => event.time,
+      :params => event.payload[:params],
+      :level => event.payload[:level]
+    }
+  end
+end