update-indexes: RC and caching

• Use recentchanges to accelerate high-frequency index updates
• Cache wish text in the local database and use it when building indexes
• Fix date parsing
• Have WishTemplate.getWish() return null on error instead of all-defaults, so that the bot can skip non-wish pages with the same title prefix as wish pages.
• Have Util.getWishIndexRow() supply a default status, since the template argument default will not work when the status is set to an empty string.
• In WishlistIntake, set the created parameter to a date, rather than a full user signature.
• Add npm scripts for DB installation and reinstallation
• Add HTTP request and SQL query debug logging.

Bug: T361067