Measure entire produce path in microbenchmark

[ballard26]

Adds produce microbenchmarks to cover the produce path from when a request is submitted to when its been written to the underlying partition.

Backports Required

• none - not a bug fix
• none - this is a backport
• none - issue does not exist in previous branches
• none - papercut/not impactful enough to backport
• v24.3.x
• v24.2.x
• v24.1.x

Release Notes

• none

[vbotbuildovich]

CI test results

test results on build#60614

test_id	test_kind	job_url	test_status	passed
rptest.tests.availability_test.AvailabilityTests.test_availability_when_one_node_failed	ducktape	https://buildkite.com/redpanda/redpanda/builds/60614#01945365-1e85-4311-9e30-7f18b1e7bb33	FLAKY	5/6
rptest.tests.partition_reassignments_test.PartitionReassignmentsTest.test_reassignments_kafka_cli	ducktape	https://buildkite.com/redpanda/redpanda/builds/60614#01945352-4ac3-41d8-aedf-aad1b5026d53	FLAKY	5/6