Initial work on implementing tasks

lib/worker/tasks/install_application.rb

@@ -0,0 +1,26 @@
+module W3DHubLauncher
+  class Task
+    class InstallApplication < Task
+      def setup
+      end
+
+      def execute
+        # TODO:
+        # fail_fast
+
+        # fetch manifests for currently installed version
+        # AND the target version so we can detect files that need to be removed
+        # between versions
+        manifests_result = fetch_manifests
+        abort_task!(manifests_result) unless manifests_result.okay?
+
+        package_list_result = build_package_list(manifests_result)
+        abort_task!(package_list_result) unless package_list_result.okay?
+
+        # remove_deleted_files
+
+        verify_files
+      end
+    end
+  end
+end