Add support for publishing subpackages when the primary package is published

[nathanklick]

Description

The publish task in the root Taskfile.yml definition does not currently publish the two subpackages when called by the CI workflow. Steps should be added to call the proto:publish and cryptography:publish from the root level Taskfile.yml definition.

Additionally, the publish tasks in the packages/proto/Taskfile.yml and the packages/cryptography/Taskfile.yml definitions should be updated with a precondition to only publish IFF the version is not already present on the npmjs.org registry.