Add Makefile with common dev tasks

[maxfisher-g]

We should have a Makefile that automates common dev tasks such as

1. building images
2. running unit tests
3. ensuring that the platform / environment is appropriately set up
4. copying built images into podman location (e.g. sudo buildah pull docker-daemon:gcr.io/ossf-malware-analysis/node:latest)

However, running analysis is NOT part of this (mostly due to having to pass command line args) and should be kept in a separate bash script