[DoubleCross]ハプニングチャートを振るためのコマンド(HC)を追加

[RYOSKATE]

『DoubleCorss』に、フォーカスシステム(FS)判定のハプニングチャート用のコマンドが欲しく実装を試みました。

• Pull Requestを送る前に確認したいこと

~/ghq/github.com/bcdice/BCDice$ bundle exec rubocop -a
Inspecting 400 files
................................................................................................................................................................................................................................................................................................................................................................................................................

400 files inspected, no offenses detected

Tip: Based on detected gems, the following RuboCop extension libraries might be helpful:
  * rubocop-rake (https://rubygems.org/gems/rubocop-rake)

You can opt out of this message by adding the following to your config (see https://docs.rubocop.org/rubocop/extensions.html#extension-suggestions for more options):
  AllCops:
    SuggestExtensions: false

~/ghq/github.com/bcdice/BCDice$ bundle exec rake test
Loaded suite /home/ryoskate/.asdf/installs/ruby/3.1.3/lib/ruby/gems/3.1.0/gems/rake-13.1.0/lib/rake/rake_test_loader
Started
Finished in 51.36861476 seconds.
-------------------------------------------------------------------------------------------------------------------
18111 tests, 117945 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
-------------------------------------------------------------------------------------------------------------------
352.57 tests/s, 2296.05 assertions/s
Warning: coverage data provided by Coverage [421] exceeds number of lines in /home/ryoskate/ghq/github.com/bcdice/BCDice/lib/bcdice/game_system/DoubleCross.rb [420]
Coverage report generated for fork-22356 to /home/ryoskate/ghq/github.com/bcdice/BCDice/coverage. 21994 / 22883 LOC (96.12%) covered.
Running RuboCop...
Inspecting 400 files
................................................................................................................................................................................................................................................................................................................................................................................................................

400 files inspected, no offenses detected

Tip: Based on detected gems, the following RuboCop extension libraries might be helpful:
  * rubocop-rake (https://rubygems.org/gems/rubocop-rake)

You can opt out of this message by adding the following to your config (see https://docs.rubocop.org/rubocop/extensions.html#extension-suggestions for more options):
  AllCops:
    SuggestExtensions: false