APMSVLS-65 first draft of extractor helper function and inclusion in extract_dd_trace_context

Second draft of implementation for extracting trace context from event['request']['headers']

Merge branch 'main' into rithika.narayan/APMSVLS-65/extract-context-from-appsync

Removing unnecessary allocations from header extraction

Added unit tests for extracting context from event['request']['headers']

Refactoring change to use extract_context_from_http_event_or_context

Removing extra testing file

linting

Merge branch 'main' into rithika.narayan/APMSVLS-65/extract-context-from-appsync

Cleaned up repeated get calls

Checking for request header field without raising exception

Removing extraneous file

Refactored code, added more unit tests

More comprehensive unit testing for coverage

Removing imported files

Removing more unnecessary files

WIP testing whether decode_authorizer_context is set

Cleanup

More cleanup

Testing refactoring for size

Removed comments

removing changes in tracer

Restoring implementation

Bump zipped layer size

Integer layer size

Merge branch 'main' into rithika.narayan/APMSVLS-65/extract-context-from-appsync

Fixing layer size calculation

Adding unit test for using extract_context_from_lambda_context

linting

Merge branch 'main' into rithika.narayan/APMSVLS-65/extract-context-from-appsync

* feat: Add batchItemFailures metric

* fmt