Nr-openai-observability

What's Changed
* Fix error str by ykriger-newrelic in https://github.com/newrelic/nr-openai-observability/pull/23


**Full Changelog**: https://github.com/newrelic/nr-openai-observability/compare/0.3.0...0.3.1

What's Changed
* Introducing LangChain integration by ykriger-newrelic in https://github.com/newrelic/nr-openai-observability/pull/21


**Full Changelog**: https://github.com/newrelic/nr-openai-observability/compare/0.2.7...0.3.0

What's Changed
* Handle null message content by RyanKadri in https://github.com/newrelic/nr-openai-observability/pull/20

New Contributors
* RyanKadri made their first contribution in https://github.com/newrelic/nr-openai-observability/pull/20

**Full Changelog**: https://github.com/newrelic/nr-openai-observability/compare/0.2.6...0.2.7

* `application_name` is now a requirement parameter for the initialization

from nr_openai_observability import monitor
monitor.initialization(
application_name="OpenAI observability example"
)


* We have introduced a new entity type: LLM application. Now all the corresponding events are attached to the new entity.
* The LLM application entities can be found [here](https://one.newrelic.com/nr1-core?&filters=%28domain%20IN%20%28%27MLOPS%27%2C%20%27MLOPS%27%2C%20%27MLOPS%27%2C%20%27MLOPS%27%29%20AND%20type%20IN%20%28%27LLM_APPLICATION%27%2C%20%27MACHINE_LEARNING_ENDPOINT%27%2C%20%27MACHINE_LEARNING_MODEL%27%2C%20%27MACHINE_LEARNING_MODEL_DATA%27%29%29)

What's Changed
* Added new events for chat completions by nhoffmann-newrelic in https://github.com/newrelic/nr-openai-observability/pull/11
* bugfix: all messages have the same ID by nhoffmann-newrelic in https://github.com/newrelic/nr-openai-observability/pull/15
* add input field to embedding by nhoffmann-newrelic in https://github.com/newrelic/nr-openai-observability/pull/16

**Full Changelog**: https://github.com/newrelic/nr-openai-observability/compare/0.2.5...0.2.6

**Full Changelog**: https://github.com/newrelic/nr-openai-observability/compare/0.2.4...0.2.5