Import Level Archive

[turecross321]

https://archive.org/details/@tamiya99

Things to consider:

• What to do with statistics from the OG server -- current plan: add additional properties to GameLevel that stores old statistics, and keep them seperate from the "actual" statistics. API v3 should return them as seperate stats, and the game API should put the OG stats in the description
• What to do with duplicate levels that have different names and publishers -- should they be merged?
• How should users be imported? The archive does contain user earth decorations and the earth position of levels, which would ideally be imported.

[TorutheRedFox]

imo missing users should be imported as placeholders (and be marked as such in the db), and existing users should have those levels be put on their profile