Bot Proposal: HTML Encoding Bot

In my time editing Open Library records, I've run into a handful of records (Authors, Editions, and Works) that have HTML encoding as part of their names. Often that causes duplicate records - one with the correct name and one with the HTML-encoded name.

I'd like to write a bot that finds and fixes HTML encodings in record names. [Here's a sample](https://openlibrary.org/authors/OL13003231A/Felix_Ladst%C3%A4tter?m=diff&b=2) of the kind of change the bot would be making.

### Technical details:
Loosely, my plan is:

1. Find records with &...; in the name
2. Use a library like [FTFY](https://ftfy.readthedocs.io/en/latest/fixes.html#ftfy.fixes.unescape_html) to get the correct characters
3. Verify that the unescaped name actually changed, then write that change back to Open Library

### Potential Issues

- This may result in text that uses non-normalized letters (see [this sample](https://openlibrary.org/authors/OL10412204A/%E1%B4%87%C9%B4%E1%B4%84%E1%B4%80%C9%B4%E1%B4%9B%E1%B4%8F_9k_Book?m=diff&b=2)). My plan above doesn't account for that. I'm not sure whether fixing that belongs in this bot or a separate bot.
- While unlikely, it's possible there does exist a record that legitimately has an HTML encoding in its name. That would be hard to determine before-the-fact, but this bot could avoid editing any records it had already edited, allowing users to manually correct the name without getting into an edit war with the bot.