Apply inherit_mode to Include and Exclude of AllCops

[pixta-yuki-ito]

Currently, the rubocop is working in pixta's repository with using configs and examples of pixta-rubocop. But it doesn't report problems when a code has problems.

Because from rubocop v0.56.0 it changed the behavior of AllCops/Include and AllCops/Exclude to the overriding way.
https://github.com/rubocop-hq/rubocop/blob/master/relnotes/v0.56.0.md#new-features

You can see this issue and pull request.
rubocop/rubocop#4247
rubocop/rubocop#5882

Oh my God... I will check that with using configs and examples of pixta-rubocop in a new rails v4.2.x project. I used this .rubocop.yml(Refer to README of pixta-rubocop).

inherit_from:
  - https://raw.githubusercontent.com/pixta-dev/pixta-rubocop/master/rubocop.yml

AllCops:
  TargetRubyVersion: 2.4
  Include:
    - '**/Rakefile'
    - '**/config.ru'
  Exclude:
    - 'Gemfile'
    - 'bin/*'
    - 'config/**/*'
    - 'db/**/*'
    - 'deploy/**/*'
    - 'vendor/**/*'

This one is the result. The target file is Rakefile and config.ru only. It can't use default configs of rubocop.

vagrant@ubuntu-bionic ~/s/g/p/rails-with-docker-compose ❯❯❯ rubocop -v
0.77.0
vagrant@ubuntu-bionic ~/s/g/h/rails-with-docker-compose ❯❯❯ rubocop --list-target-files                                                                                                                                                                                    ✘ 1
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for SingleLineMethods.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for Documentation.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for MultilineBlockChain.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for Lambda.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for ClassAndModuleChildren.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for FormatString.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for MethodLength.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for StringLiterals.
Warning: unrecognized cop Rails found in .rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml
Warning: unrecognized cop Rails found in .rubocop.yml
Rakefile
config.ru

We should fix that problem. Normally pixta-rubocop uses default configs of rubocop. But we customized some configs to PIXTA. So we also want to apply that mind to AllCops/Include and AllCops/Exclude. If that we can use inherit_mode. inherit_mode has two options merge and override.
https://docs.rubocop.org/en/stable/configuration/#merging-arrays-using-inherit_mode

In our case, we can specify inherit_mode/merge to AllCops/Include and AllCops/Exclude.

I also check that with using inherit_mode/merge.

inherit_from:
  - https://raw.githubusercontent.com/pixta-dev/pixta-rubocop/master/rubocop.yml

inherit_mode:
  merge:
    - Include
    - Exclude

AllCops:
  TargetRubyVersion: 2.4
  Include:
    - '**/Rakefile'
    - '**/config.ru'
  Exclude:
    - 'Gemfile'
    - 'bin/*'
    - 'config/**/*'
    - 'db/**/*'
    - 'deploy/**/*'
    - 'vendor/**/*'

# Allow Japanese comments
AsciiComments:
  Enabled: false

This one is the result. it works well 💯

vagrant@ubuntu-bionic ~/s/g/p/rails-with-docker-compose ❯❯❯ rubocop -v
0.77.0
vagrant@ubuntu-bionic ~/s/g/h/rails-with-docker-compose ❯❯❯ rubocop --list-target-files
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for SingleLineMethods.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for Documentation.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for MultilineBlockChain.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for Lambda.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for ClassAndModuleChildren.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for FormatString.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for MethodLength.
/home/vagrant/src/github.com-for-hamuyuuki/hamuyuuki/rails-with-docker-compose/.rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml: Warning: no department given for StringLiterals.
Warning: unrecognized cop Rails found in .rubocop-https---raw-githubusercontent-com-pixta-dev-pixta-rubocop-master-rubocop-yml
Warning: unrecognized cop Rails found in .rubocop.yml
Rakefile
app/controllers/application_controller.rb
app/helpers/application_helper.rb
config.ru
test/test_helper.rb

This PR changes README and examples in the pixta-rubocop. After this PR is LGTM, we need to apply that configs to pixta's repository.

[pixta-yuki-ito]

[FYI]
Because **/Rakefile includes in the default configs.

[pixta-yuki-ito]

[FYI]
Because vendor/**/* includes in the default configs.

[k-tokitoh]

LGTM!

[k-tokitoh]

[nits]
'**/config.ru' also seems listed in the default config. so it can be deleted, i think.
ref. https://github.com/rubocop-hq/rubocop/blob/c50e7473f8627dd276cb7656bcd1953cb74bb243/config/default.yml#L31