fix: adds support for proxy_options when calling Client#_

[Carmer]

Adds proxy_options support when calling #_ on an instance of Client.

Checklist

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

I did not add inline documentation because this is a feature that appears to be well documented, but just missing proxy_options argument making the feature non-functional