Add resource definitions for all 22 API tags, wire client accessors and require tree

lib/fiken/resources/companies.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module Fiken
+  module Resources
+    # GET /companies and GET /companies/{companySlug}
+    class Companies < Resource::Base
+      include Resource::Listable
+      include Resource::Findable
+
+      def resource_path
+        "companies"
+      end
+    end
+  end
+end