add llmobs config

LLM Observability writers

LLM Observability tagger

…r/llmobs-sdk-release

* span processor

* tests

* remove agent exporter log and do not stringify tags

* remove llmobs from exporter tests

* add in default unserializable value

* review comments

* warning log for metric

* todo-ify

* remove some duplicate logic

* decouple llmobs span processing with a channel

* use a static weakmap to store llmobs tags/annotations instead of span tags

* do not register span in map if it does not have an llmobs span kind

* span is passed on an object from sp publisher

* re-clarify TODOs

* only send span in publish

* log multiple warnings and return conditional undefined

* update error logic

* wip

* type definitions

* active + try/catch eval metric writer append

* test ts

* use tagger map and processor as a channel subscriber

* change decorate and add in dev changes

* try some api changes

* add decorate to noop

* fix breaking proxy tests

* experimental decorators for TS docs

* api changes, fix unit + e2e tests

* try removing global log mocks

* add some util tests

* remove logger mocks

* add module tests + do not enable when not specified

* fix eval metric integration test

* wip

* memoize getFunctionArguments

* move any subscriber and global writer to the module enablement level instead of sdk

* should fix TS tests

* add ts integration test and fix decorator

* devex for ts versions

* add noop typescript test

* remove startSpan

* remove unneeded change

* dedup decorator code

* Update index.d.ts

Co-authored-by: Yun Kim <35776586+Yun-Kim@users.noreply.github.com>

* map metrics names

* change validKind to validateKind and throw

* tagger for metrics follow-up

* review feedback

* add some tests for not auto-annotating in certain cases

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Co-authored-by: Yun Kim <35776586+Yun-Kim@users.noreply.github.com>