Cop for consistent usage of parens in FactoryBot calls

[Liberatys]

Implement a new cop that enables the enforcement of parentheses in factory bot calls.

This cop attempts to solve the "issue" outlined in #416 edit: fixes #416

---

Before submitting the PR make sure the following are checked:

• [x] Feature branch is up-to-date with master (if not - rebase it).
• [x] Squashed related commits together.
• [x] Added tests.
• [x] Updated documentation.
• [x] Added an entry to the CHANGELOG.md if the new code introduces user-observable changes.
• [x] The build (bundle exec rake) passes (be sure to run this locally, since it may produce updated documentation that you will need to commit).

If you have created a new cop:

• [x] Added the new cop to config/default.yml.
• [x] The cop is configured as Enabled: pending in config/default.yml.
• [x] The cop documents examples of good and bad code.
• [x] The tests assert both that bad code is reported and that good code is not reported.
• [x] Set VersionAdded in default/config.yml to the next minor version.

If you have modified an existing cop's configuration options:

• [ ] Set VersionChanged in config/default.yml to the next major version.

[ghost]

This cop attempts to solve the "issue" outlined in #416

[pirj]

RuboCop is red, I hope you'll find it relatively easy to fix it.

[ghost]

@Darhazer Sorry for a long time between activities ^^ I pretty much forgot that this pr exists :D. I added your concern about the 'nested' call as a spec: https://github.com/rubocop/rubocop-rspec/pull/1096/files#diff-e694e1d15e68306d0a724e35afadbc5a430fd6602ccd827e985f2aefae2935c7R228.

I also added some specs for multiline calls: https://github.com/rubocop/rubocop-rspec/pull/1096/files#diff-e694e1d15e68306d0a724e35afadbc5a430fd6602ccd827e985f2aefae2935c7R160-R175.

🙏🏻 Thank you for the work on rspec and rubocop.

[ghost]

@pirj I rebased onto upstream, regenerated the docs and implement your suggestions ^^ Thank you for the review :D

[pirj]

Thank you! Looks great 🙌

[ghost]

ah 🤦🏻 @pirj Sorry. Should have checked again if the CI passed :/. Thank you very much for fixing it!

[pirj]

Thank you for the contribution, your time and effort, @Liberatys! My apologies for delaying the merge.