Vendorize gorm and dependencies.

gorm: 922395c965d33f00c7ea19718da2e285a403084d
go-sqlite3: abd3d9caef4548682a279b60c859c197a1b32a47
pq: 3c5c5bd6383b42aec97b5aa39fba2cddd35aea36
Working on saving Summoners, Games, and Stats.

Have most of the logic in place, need to do better error handling. Has
not been tested yet.