init: fix setting package version, gpVersion override

[twelch]

• version in package.json now getting set to 0.1 instead of picking up whatever the gp version was in base-project/package.json.
• when using gpVersion override for installing experimental canary, it would install geoprocessing package to devDependencies still, switched to dependencies since everything is installed there now.
• It's now possible to execute dist/scripts/init/init.js directly and pass gpVersion e.g. - node geoprocessing/dist/scripts/init/init.js @seasketch/geoprocessing@7.0.0-experimental-init-fixez.9