Add Lambda support.

[zzhlogin]

Extend Lambda Support with the following change:

1. Modify patch _LambdaExtension where extract FunctionName and UUID(event resource mapping ID) and add into "aws.lambda.function_name" and "aws.lambda.resource_mapping_id" span attributes. The attributes only exist in request context so we only modify extract_attributes function.

Note: The upstream already have logic adds FunctionName into SpanAttributes.FAAS_INVOKED_NAME for Invoke operation only. In this PR, we want to extract FunctionName from as many API as we can, but it feels like SpanAttributes.FAAS_INVOKED_NAME is not appropriate to be used as span attribute key for all operations, we define "aws.lambda.function_name" separately, and use it for remoteResourceIdentifier.

2. Populate RemoteResourceType and RemoteResourceIdentifier for Lambda in ADOT python and update unit test and contract test to verify ADOT python performance.

There is only one API （UpdateEventSourceMappingRequest） have both FunctionName and UUID attributes, we use UUID for it so when adding remoteResourceIdentifier, we set "aws.lambda.resource_mapping_id" with higher priority.

Testing:
A manually E2E test is performed, and confirmed the expected traces metrics and service maps are generated:

Trace:

Metrics:

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[thpierce]

Very outdated, resolve.