Add utility function to confirm ZIM can be created at given location / name

[benoit74]

In warc2zim, we have a tooling which confirms that:

• output folder exists
• output folder is writable
• ZIM name is acceptable by current filesystem

This is run at the beginning of the scraper, to avoid loosing time scraping stuff and then failing many hours later.

https://github.com/openzim/warc2zim/blob/32d1a20e5df425ed737f07d91155978fe0a92bed/src/warc2zim/converter.py#L127-L162

Sharing this logic in zimscraperlib would be great since all scrapers should do these checks indeed.