Add Frobenius normal form hack

[adamant-pwn]

See e.g. https://judge.yosupo.jp/hack/122.

I'm currently investigating on what causes it in my solution.

My solution to characteristic polynomial problem doesn't seem to be affected, although uses the same code.

Also putting $0$ instead of $1$ only in the first or second column doesn't seem to hack the solution.

[maspypy]

Run

./generate.py linear_algebra/pow_of_matrix/info.toml --dev

and then, hash.json will be updated. Please commit it.

[adamant-pwn]

Oops, sorry, done now.

[maspypy]

Thank you!