NWNX_TWEAKS_CHARLIST_SORT_BY_LAST_PLAYED_DATE: env var takes number of characters to sort

[hendrikgit]

I added no special env var value to mean "all", one can just set it to the maximum instead I figured. 2 million characters should be enough for anyone.

[Daztek]

I think this will 'break' the plugin for people who are already using it by only sorting 1 character? Maybe keep NWNX_TWEAKS_CHARLIST_SORT_BY_LAST_PLAYED_DATE as true/false to enable the tweak and add an additional env var to set the num characters to sort and default to max when it's not set?

[hendrikgit]

Yes, those who currently have it set to true would then only get 1 recently used character. I was thinking since the plugin is relatively new maybe we can get away with a small breaking change and keep the code simpler. Seeing how the breaking behaviour is also not that bad.

If you prefer I'll add the second env var, sounds like a good solution.