[Help wanted] Test all kinds of cartridge save

[wwylele]

Due to my limited resource of cartridge games, I couldn't test all kinds of wear leveling / encryption schemes. Specifically, the following cases need test:

• [x] Very early cartridge releases that have the exploit known as the "repeat CTR failure".
• [ ] (Not sure if this exists at all) Very-but-not-the-most early cartridge release that have the same exploit but v2 key generation method. save3ds currently assumes this doesn't exist, and would gives a verification error if it does exist.
• [ ] N3DS exclusive games. Note that you need to provide the correct --key19x and --key1ax to test this.
• [ ] other than 128KB, 512KB and 1MB, any other Card1 flash size ?