Feature: Add janken and other actions returning random values to PreCureMonad

[igrep]

Goal

Add Cure Peace's janken like rubicure, and Uni's non-PreCure transformations (cf. sue445/rubicure#210)

How

Adding a MonadRandom monad to the monad stack will solve the problem.

[igrep]

Name candidate: disguiseAs https://ejje.weblio.jp/content/%E5%8C%96%E3%81%91%E3%82%8B

[igrep]

IMO Mao and Bakenyan (and Blue Cat too?) shouldn't be able to transform into Cure Cosmo until she undisguises.
So Super PreCure Monad, which is being implemented in https://github.com/igrep/typesafe-precure/tree/super-precure-monad may conflict.

[igrep]

Actually, I don't have to make the return value of disguise random. Just adding Mao, Bakenyan and Bluecat as a argument may suffice