Added application container

Necessary to register common application dependencies for potential injection as desired.

lib/trmnl/api/container.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require "cogger"
+require "containable"
+require "http"
+
+module TRMNL
+  module API
+    # Registers application dependencies.
+    module Container
+      extend Containable
+
+      register(:client) { API::Client.new }
+      register(:logger) { Cogger.new id: "trmnl-api", formatter: :json }
+
+      register :http do
+        HTTP.default_options = ::HTTP::Options.new features: {logging: {logger: self[:logger]}}
+        HTTP
+      end
+
+      namespace :contracts do
+        register :current_screen, Contracts::CurrentScreen
+        register :display, Contracts::Display
+        register :firmware, Contracts::Firmware
+        register :setup, Contracts::Setup
+      end
+
+      namespace :models do
+        register :current_screen, Models::CurrentScreen
+        register :display, Models::Display
+        register :firmware, Models::Firmware
+        register :setup, Models::Setup
+      end
+    end
+  end
+end