feat: add IsSuccessStatusCode

[shoter]

Fixes

Resolves #1076

A short description of what this PR does.

Introduce new property IsSuccessStatusCode into Response. This property indicates whether given response contains success status code (2xx).

IsSuccessStatusCode is implemented in the same way as HttpResponseMessage.IsSuccessStatusCode

I could not run make test-docker so I made tests that are not using real requests.

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please file a support ticket, or create a GitHub Issue in this repository.

[thinkingserious]

LGTM! Thank you!