fix: logs formatter to include severity for Datadog processing

app/log/standard_notes_formatter.rb

@@ -0,0 +1,10 @@
+class StandardNotesFormatter < ActiveSupport::Logger::SimpleFormatter
+  def call(severity, timestamp, _progname, message)
+    {
+      level: severity,
+      time: timestamp,
+      message: message,
+      ddsource: ['ruby'],
+    }.to_json + "\n"
+  end
+end