Added palette model

Necessary to build a record out of the API response.

Milestone: minor

lib/trmnl/api/container.rb

@@ -36,6 +36,7 @@ module TRMNL
         register :firmware, Models::Firmware
         register :ip_address, Models::IPAddress
         register :model, Models::Model
+        register :palette, Models::Palette
         register :setup, Models::Setup
       end
     end

lib/trmnl/api/models/palette.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module TRMNL
+  module API
+    module Models
+      # IPs API response.
+      Palette = Data.define :id, :name, :grays, :colors, :framework_class do
+        def self.for(attributes) = new(**attributes)
+      end
+    end
+  end
+end

spec/lib/trmnl/api/models/palette_spec.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe TRMNL::API::Models::Palette do
+  describe ".for" do
+    it "answers record for attributes" do
+      attributes = {
+        id: "test",
+        name: "Test",
+        grays: 2,
+        colors: %w[#000000 #FFFFFF],
+        framework_class: "screen--1bit"
+      }
+
+      expect(described_class.for(attributes)).to eq(described_class[**attributes])
+    end
+  end
+end