[🚀 Feature]: [dotnet] [bidi] Support new pattern for extensible types

[nvborisenko]

Description

Example:

CommandResponse = {
  type: "success",
  id: js-uint,
  result: ResultData,
  Extensible
}

https://learn.microsoft.com/en-us/dotnet/api/system.text.json.serialization.jsonextensiondataattribute?view=net-8.0

But it is not easy as seems. Any command and result is extensible! Meaning we should provide API to take this additional data from user. It can be achieved via AnyCommandOptions class which already exists.

Note: It will be hard to choose between IDictionary<string, object> and IDictionary<string, JsonElement>.

Have you considered any alternatives or workarounds?

No response

[titusfortner]

@nvborisenko, thank you for creating this issue. We will troubleshoot it as soon as we can.

---

Info for maintainers

Triage this issue by using labels.

If information is missing, add a helpful comment and then J-issue-template label.

If the issue is a question, add the I-question label.

If the issue is valid but there is no time to troubleshoot it, consider adding the help wanted label.

If the issue requires changes or fixes from an external project (e.g., ChromeDriver, GeckoDriver, MSEdgeDriver, W3C), add the applicable G-* label, and it will provide the correct link and auto-close the issue.

After troubleshooting the issue, please add the R-awaiting answer label.

Thank you!