Add python app modules version information to the data published to agent_lifecycle_event

[ak-war]

Atm python agent is publishing information about modules (like numpy) but missing versions. Afaik this information is present on runtime can be fetched and sent as attribute map for the update to the agent_lifecycle_event topic. The Python APM agent doesn't report library versions, so we can't do CVE analysis on python dependencies yet. The python agent doesn't capture the version of installed modules, which prevents us from doing security analysis on 3rd party dependencies in python services.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[hmstepanek]

Possible implementation here.