Add Metrics Upload to diff Command

[lucia-sb]

What does this PR do?

Adds support for sending metrics to Datadog using the --to-dd-org and --to-dd-key options in the diff command between two consecutive commits.

Motivation

To provide more visibility into which PR introduced a size change.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

Attention: Patch coverage is 17.44186% with 71 lines in your changes missing coverage. Please review.

Project coverage is 90.59%. Comparing base (ed5c35c) to head (5c89f1a).

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra	?
confluent_platform	?
ddev	86.97% <17.44%> (-0.30%)	⬇️
hive	?
hivemq	?
hudi	?
ignite	?
jboss_wildfly	?
kafka	?
presto	?
solr	?
tomcat	?
weblogic	?

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