Add end-to-end benchmark command

[marc-gr]

Expand the benchmark command to add end-to-end capabilities in addition to pipeline ones.

Having a working cluster and a set of agent hosts enrolled, we want to run benchmark scenarios for a given package version and data stream.

Requirements:

• A spec to define benchmark scenarios [Change Proposal] Add benchmark definitions to packages package-spec#483

Scope:

• Set up the custom policy
• Start the benchmark services containing the required tooling to deliver the logs
• Run these services
• Collect results
• Stop benchmark services

Not in scope for the command:

• Manage the required infrastructure - it expects a working fleet setup
• Generate corpora data on-the-fly - it needs to be pre-generated

[aspacca]

• Generate corpora data on-the-fly - it needs to be pre-generated

for generating data on-the-fly we are working on #1110

currently in a separated command, I'll move as subcommand of benchmark