Autogenerate new deployments

[thomas-bc]

F´ Version
Affected Component

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Feature Description

Add a fprime-util new --deployment command which generates an entire "Hello World!" deployment.

Rationale

This has been requested a couple of times and would drastically improve the user experience when first trying out the framework. This would help in understanding what the best practice for creating a new deployment is, rather than adding things in the Ref app.
It could also be a very good starting point for a new Tutorial that goes from 0 to hero.

[SterlingPeet]

FYI, feel free to look through this cookiecutter and use it, parts of it, or just look into the parts and organization for inspiration:

https://github.com/SterlingPeet/cookiecutter-fprime-deployment

It is designed to support minimal deployments for Arduino platform and Linux, YMMV