Add new plugin SyncFileYouWant

Updating the plugin name from SyncFile to SyncFileYouWant according to suggestion
This is not a valid details URL. It should be: `https://github.com/Lanceshi2/SyncFileYouWant/tags`. Then when you want to release a new version, create a tag with three number. For example: `1.0.0` or `1.0.1`.