feat: add datadog integration and lograge JSON logs formatting

Gemfile.lock

@@ -67,6 +67,9 @@ GEM
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
     crass (1.0.6)
+    ddtrace (0.38.0)
+      msgpack
+    dogstatsd-ruby (4.8.1)
     dotenv (2.7.5)
     dotenv-rails (2.7.5)
       dotenv (= 2.7.5)
@@ -83,6 +86,11 @@ GEM
     i18n (1.8.2)
       concurrent-ruby (~> 1.0)
     json (1.8.6)
+    lograge (0.11.2)
+      actionpack (>= 4)
+      activesupport (>= 4)
+      railties (>= 4)
+      request_store (~> 1.0)
     loofah (2.4.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -92,6 +100,8 @@ GEM
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
+    msgpack (1.3.3)
+    msgpack (1.3.3-x64-mingw32)
     net-scp (2.0.0)
       net-ssh (>= 2.6.5, < 6.0.0)
     net-ssh (5.2.0)
@@ -140,6 +150,8 @@ GEM
       ffi (~> 1.0)
     rdoc (4.3.0)
     redis (4.1.3)
+    request_store (1.5.0)
+      rack (>= 1.4)
     responders (2.4.1)
       actionpack (>= 4.2.0, < 6.0)
       railties (>= 4.2.0, < 6.0)
@@ -200,8 +212,11 @@ DEPENDENCIES
   capistrano-rails
   capistrano-rvm
   capistrano-sidekiq
+  ddtrace (~> 0.38.0)
+  dogstatsd-ruby (~> 4.8)
   dotenv-rails
   haml
+  lograge (~> 0.11.2)
   non-stupid-digest-assets
   puma
   rack-cors