Add dev option for importing components

[brollb]

Components should have an ignore option which doesn't allow the component to be shared and adds the component directory to an .npmignore directory

[brollb]

the flag will be --private or -p

[brollb]

This may not be possible/desired in general. It may be a feature only added to seeds (as test seeds could be larger than desired and result in unnecessary bloat in dependencies).

Other components for testing may also add some bloat but a significantly lesser amount as opposed to seeds

[brollb]

One possible option for this could be adding this for the import command which installs the dependent project to devDependencies