feat(perplexity): Created Dedicated Output Parser to Support Reasoning Model Output for perplexity

[keenborder786]

• Description: Add the perplexity Output Parser to support reasoning model output to remove tags which was invalidating the JSON output.
• Issue: Perplexity Reasoning model with structuredOutput causes JsonOutputParser error #32465

[keenborder786]

@mdrxy

[codspeed-hq]

CodSpeed Performance Report

Merging #33670 will not alter performance

_{Comparing keenborder786:feat/preplexity_parser (6bbd7ff) with master (f3d7152)}

Summary

✅ 1 untouched
⏩ 33 skipped¹

Footnotes

1. 33 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩