Move spack package to repo; setup tests

Spack Package Repository

========================

In order to integrate ContainerBuilder with an existing Spack installation,

we separate the ContainerBuilder package into its own "Spack Repository" which

can be dynamically added to an existing spack installation like this:

```bash

# Assumes a loaded spack environment

spack repo add spack-repo/containerbuilder

spack install container-builder

```

This repository is structured according to Spack's repository definitions. For

example, see [Spack itself](https://github.com/spack/spack/tree/develop/var/spack/repos/builtin.mock).

*.pyc

class Containerbuilder(Package):

from spack import *

class ContainerBuilder(CMakePackage):

    """ContainerBuilder Client"""

    homepage = "https://github.com/AdamSimpson/ContainerBuilder"

    version('0.0.0')

    depends_on('boost@1.65.1+coroutine')

    def install(self, spec, prefix):

        with working_dir('build', create=True):

            cmake('..', *std_cmake_args)

            make()

            make('install')

 No newline at end of file

    depends_on('boost@1.65.1')

repo:

  namespace: 'containerbuilder'

artifacts/*