Address warnings from shellcheck (e.g., properly quoting expressions
and combining conditionals) to better follow bash best practices.

Additionally, introduce our standard set line to catch errors earlier
and conditionally provide debugging output.

Introduce a script to enforce rules about dependency relationships
between packages in the project.

This script leverages the existing go-deps.sh script, including its
caching logic (enabled by setting VIC_CACHE_DEPS).

Define an initial set of dependency enforcement rules based on the
current state of the codebase.

Some problematic relationships were identified and annotated.

Add dependency relationship enforcement to the checks stage of the
build process so that it runs as a part of CI.

Add TODOs to track bad dependencies