Restructure project

We previously didn't really had any structure in our project apart
from creating a new folder for each package in our project root.
Now that we have accumulated some packages, we use the well-known
Golang project layout in order to clearly communicate our intent
with packages. See https://github.com/golang-standards/project-layout

deploy/nomad-run-env-job.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# This script substitutes environment variables in the given Nomad job and runs it afterwards.
+
+if [[ "$#" -ne 2 ]]; then
+  echo "Usage: $0 path/to/infile path/to/outfile"
+fi
+
+envsubst "$(env | sed -e 's/=.*//' -e 's/^/\$/g')" < $1 > $2
+nomad validate $2
+# nomad plan returns 1 if allocations are created or destroyed which is what we want here
+# https://www.nomadproject.io/docs/commands/job/plan#usage
+nomad plan     $2 || [ $? == 1 ]
+nomad run      $2