Microservices style guide

[stscicrawford]

Develop a description for the style guide for how to use web fabric for microservices. Maybe related to #67. This should be reviewed by the ASB architecture review board.

[mfox22]

Style guide? Here is the cookie cutter and automation to generate what I was talking about:
https://grit.stsci.edu/mast/mast-services-template/tree/master/%7B%7B%20cookiecutter.package_name%20%7D%7D

https://grit.stsci.edu/mast/mast-services-template

Here is an example one I made:
https://grit.stsci.edu/mast/tesszoo-mast
(Generates all docs, test, ci/cd stubs...)

Architecture docs live here:
https://grit.stsci.edu/mast/asb-core/blob/master/doc/README.md
https://grit.stsci.edu/mast/asb-core/blob/master/doc/Routing.md