New Project generation feature

[thomas-bc]

Originating Project/Creator
Affected Component
Affected Architectures(s)
Related Issue(s)
Has Unit Tests (y/n)
Builds Without Errors (y/n)	y
Unit Tests Pass (y/n)
Documentation Included (y/n)	y

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Change Description

Adds in a new project cookiecutter template and the associated logic for new --project
Checks that git is installed, generates a minimal amount of project files, then init a git repo and add F' as a git submodule.
Optionally creates a venv and sets it up with requirements.txt.

Rationale

Vastly improves user experience to getting started, enforces a good project structure instead of using Ref/

Testing/Review Recommendations

fprime-util new --project
cd ...
fprime-util new --deployment
cd ...
fprime-util generate
fprime-util build
fprime-gds

Tested with pip install . with no -e.

[thomas-bc]

@LeStarch There's probably a lot to be said about the generated CMakeLists.txt and settings.ini as this methodology is not clearly defined yet. Should we just remove them for the time being?