Break out Node installation code into its own Ansible role

# 💡 Summary #

The Node installation code in `src/reporting_engine.yml` should be broken out into its own Ansible role.

## Motivation and context ##

Installing Node from the official package repos is generally useful and would unclutter `src/reporting_engine.yml`.

Start by reading the Node installation code in src/reporting_engine.yml and identify everything that belongs to installing Node from the official package repositories. Move that work into a dedicated Ansible role, then verify that src/reporting_engine.yml is uncluttered while Node installation still works.

Written by the indexing model from the issue text.