v0.0.10 - More demos, auto mocks, notifications, sub-commands, improvements

[ballercat]

• Let users specify a filepath during an auto-mock. This filepath will be read from disk when an auto-mock is used.
• Improve nextjs-graphql-example. Add a demo of an image placeholder.
• Add Chrome Extension notifications. Config updates fire notifications.
• Add ping & shutdown sub-commmands to jam-server
• Add tail sub-command for tailing a current log
• Create a .jambox folder if one doesn't exist in cwd