spec (add spec) Add initial backend service YAML spec. (#18)
spec (add spec) Add initial backend service YAML spec. (#18)

* spec (add spec) Add initial backend service YAML spec.

+ Created spec/ folder to group the specs of the different available components in the application.
Added the apollo-server-spec.yaml to describe request/response formats from the backend service.

* nitfix (resolve) Resolve requested fixes

+ Updated the spec/apollo-server-spec.yaml file based on requested updates by teammates.

* nitfix (spec) Resolve nitfixes on the apollo spec.

+ Removed operationName attribute not needed on the Request definition.
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