Add my game to PBBGCharts

Please DM asdfdelta#2822 on the PBBG Discord.

Today there are two (2) methods to get on PBBGCharts.

1. (Preferred) Put a single-line JavaScript tag on your game pages.
2. Expose an public endpoint that returns a JSON object of the total number of logged in users over the past 24 hours.

For more info about how those work, see the Info page.