Project / Job Environment variables & secrets

[gillchristian]

Most CI systems provide environment variables related to the job being run and the project (eg. the current commit). They also provide a way to provide secrets available as environment variables to the commands running on the particular job.

This is easily solved by adding some dotenv file in the project's directory and not requiring any solution from Subilo's side (for secrets at least)

With the idea proposed in #59 of being able to add new projects through the client UI having the ability to provide secrets and env vars through some Subilo solution would be great. Otherwise it would still be necessary to ssh in the machine running the Agent to add a new project