"deepgramTranscribeAudio" function added

[IMPranshu]

What does this PR do?

This PR adds the "deepgramTranscribeAudio" java function to openruntime java library as per the requirement of the issue

Related PRs and Issues

https://github.com/appwrite/appwrite/issues/4493.

Screenshot:

✅ Task Summary

• [x] Ask to be assigned to the issue.
• [x] Implement function deepgramTranscribeAudio() in Java/ folder.
• [x] Manually execute the newly implemented function to ensure it works.
• [x] Submit a pull request in open-runtimes/examples and include screenshots of successful execution.