CS-13: HasResultStatusCheckShortSyntax plugin

[Olha-30]

What was done as a part of this PR?

• Implemented the HasResultStatusCheckShortSyntax plugin.
• Added specs for the HasResultStatusCheckShortSyntax plugin.

Why it was done?

• To have the ability to call success?, error?, failure? etc, without calling result.

  Before(a way to check the service status)

  Service.result(**kwargs).success?

  After(one more way to check the service status)

  Service.success?(**kwargs)

How to test?

• Use the following command:

  task rspec -- spec/lib/convenient_service/service/plugins/has_result_status_check_short_syntax

Checklist:

• I have performed a self-review of my code.
• I have added/adjusted tests that prove my fix is effective or that my feature works.
• CI is green.

[coveralls]

Pull Request Test Coverage Report for Build 3457344558

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 16 of 22 (72.73%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.09%) to 95.811%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
lib/convenient_service/service/plugins/has_result_status_check_short_syntax/concern.rb	13	19	68.42%

Totals
Change from base Build 3456897160:	-0.09%
Covered Lines:	5352
Relevant Lines:	5586

---

💛 - Coveralls

[marian13]

@Olha-30

Please, resolve the comments above, then we are good to merge 🎉🎉🎉