wip: first pass at writing a job schema in cue

[frrist]

1. Download the latest version of cue

• https://github.com/cue-lang/cue/releases/tag/v0.8.0

2. vet your job specs with this via the command:

• cue vet -d "#Job" testdata/jobs/docker-output.yaml pkg/models/job-schema.cue

Couple notes:

• This is a work in progress, not perfect
• At present the schema requires that keys in your yaml be upper case