[exporter/sapm] Deprecate the SAPM exporter

[atoulme]

Component(s)

exporter/sapm

Describe the issue you're reporting

Consider deprecating the sapmexporter. This exporter will be replaced by OTLP. The deprecation cycle would start a timer of at least a year before eventual removal.

[github-actions]

Pinging code owners for exporter/sapm: @dmitryax @atoulme. See Adding Labels via Comments if you do not have permissions to add labels yourself.

[crobert-1]

Removing needs triage as this was filed by a code owner and another supported option will exist instead.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• exporter/sapm: @dmitryax @atoulme

See Adding Labels via Comments if you do not have permissions to add labels yourself.