Add streaming TTFT (Time To First Token) support for LlamaIndex instrumentation#281

shuningc wants to merge 2 commits intomainsignalfx/splunk-otel-python-contrib:mainfrom

HYBIM-620-streaming-ttftsignalfx/splunk-otel-python-contrib:HYBIM-620-streaming-ttftCopy head branch name to clipboard