Add Grafana Alloy as an addon package

Package Merge Request

Package Changes

This will add the ability to deploy Grafana Alloy as an addon package.

Package MR

(Link to Package MR here)

For Issue

Closes &347 (closed) and https://repo1.dso.mil/big-bang/apps/sandbox/alloy/-/issues/11

Upgrade Notices

Announcing this as a new package in beta.