Create RemovableDrivePlugin

Create a RemovableDrivePlugin that extends FilePlugin, along with a suitable PluginFactory. The plugin's writerFinished() method can be a no-op. The readerFinished() method should try to delete the file if the tag was recognised and the read completed without an exception, failing gracefully if the file is on a read-only filesystem.

The UI read/write tasks (#2017 (closed) and #2018 (closed)) will interact with the plugin via its createReader() and createWriter() methods, which are already provided by FilePlugin.

Subtask of #1802 (closed)