v2.1.0-dev1

• fix: project.json load on initialization
• fix: redid cloud datastore bucket copy branch
• fix: redid viur create workflow
• chore: refactoring
• feature: implement variable substitution for app.yaml
• feature: implement skip checks flag to viur cloud deploy command
• feature: make viur package install more handy
• feature: added version check and more verbosity for viur package command
• feature: added support for overriding default ports
• feature: viur cloud setup gcloud now requires deploy diretory in current working directory
• feature: added support for cloudfunction gen2