Improve template developer experience

[ImanMh]

Is your proposal related to a problem?

It's currently a pain in the neck for template developers to test their output since the need to run

npx create-react-app my-app --template file:../path/to/your/template/cra-template-[template-name]

and also wait for the deps to be installed.

(Write your answer here.)

Describe the solution you'd like

They can run

npx create-react-app my-app --template file:../path/to/your/template/cra-template-[template-name] --no-install-deps

Describe alternatives you've considered

I can also make an env like CRA_NO_AUTO_DEPS_INSTALL so if such env is available I can skip the 'npm' or 'yarn' install.

Additional context

What do you think?