1) Added a bare-bones framework for quantum plugins.

1) Added a bare-bones framework for quantum plugins.
2) Created demo quantum plugin that conforms to QuantumPluginBase
    Abstract class specification.
3) Demonstrated plugin registration and invocation using the demo
    plugin called "QuantumEchoPlugin"
4) Created the initial file structure for a quantum CLI
5) Seeded the utils module that will contain frequently used Quantum utilities.
6) Modified the manager module to initialize and register the quantum plugin
    defined in a configuration file. I have hard-coded the path to plugin for now
    but this will move to a quantum.conf file.

TODO:

1) Finish up the Quantum CLI
2) Write Quantum unit tests that can be run against any plug-in for certification.
3) Create a working quantum plugin.