Dynamic selection of log_group_name and log_stream_name in aws cloudwatch logs exporter

[sorobon]

Component(s)

exporter/awscloudwatchlogs

Is your feature request related to a problem? Please describe.

Duplicate with #14554
We are running the opentelemetry collector to send logs from our edge systems to a central opentelemetry gateway service. From the gateway we'd like to write logs to cloudwatch logs in different log groups and streams based on log resources.

Describe the solution you'd like

We'd like to be able to set the log_group_name and log_stream_name dynamically based on fields from the log event:

awscloudwatchlogs:
    log_group_name: "{log_file_name}"
    log_stream_name: "{resource.hostname}"

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• exporter/awscloudwatchlogs: @boostchicken @bryan-aguilar @rapphil

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