Publish progress to another repository

[koba-e964]

Put output of yukicoder/remaining.py and atcoder/ranking.py in some repository other than https://github.com/koba-e964/contest.

TODO

• AtCoder
• yukicoder
• CafeCoder
• Exclude unsolvable problems

[koba-e964]

Partially done in 196b10b:
https://github.com/koba-e964/contest-achievements/blob/master/cafecoder/summary.md

[koba-e964]

Like https://kenkoooo.com/atcoder/#/user/${USERNAME}?userPageTab=AtCoder+Pie+Charts, some kind of caching mechanism should be employed.