add AWS CloudWatch metrics

[bedrock-adam]

[{:metric_name=>"MessageCount",
  :dimensions=>[{:name=>"Status", :value=>"Queued"}, {:name=>"Environment", :value=>"development"}],
  :value=>51747,
  :unit=>"Count"},
 {:metric_name=>"MessageCount",
  :dimensions=>[{:name=>"Status", :value=>"Publishing"}, {:name=>"Environment", :value=>"development"}],
  :value=>1,
  :unit=>"Count"},
 {:metric_name=>"MessageCount",
  :dimensions=>[{:name=>"Status", :value=>"Published"}, {:name=>"Environment", :value=>"development"}],
  :value=>1865246,
  :unit=>"Count"},
 {:metric_name=>"MessageCount",
  :dimensions=>[{:name=>"Status", :value=>"Failed"}, {:name=>"Environment", :value=>"development"}],
  :value=>1,
  :unit=>"Count"},
 {:metric_name=>"MessageLatency",
  :dimensions=>[{:name=>"Status", :value=>"Queued"}, {:name=>"Environment", :value=>"development"}],
  :value=>36455,
  :unit=>"Seconds"}]