Add ability to track completion status #197
Description
We want to know when a game is completed in xemu, which might make it eligible for Perfect status. This could be done for example with:
- An option in the compatibility tracker,
- An issue filed on xemu GitHub with links to completed games (including the version of xemu they were completed with)
Then we can display something on the website indicating when the game was completed, by whom, and what version they were using.