Add cli creation capability

[Sebastian-Webster]

This pull request closes #141

TODO before this can be merged

• Add documentation for running from cli
• Update issue template for bugs to say whether the issue occurred while running from the cli or from application code
• Allow database options to be passed to the cli
• Add database deletion when exiting
• Add binary deletion when exiting if downloadBinaryOnce is false
• Add log message when stopping the database
• Move exit handler to startMySQL from startMySQLProcess
• Add option type validation #146 gets closed

[Sebastian-Webster]

EDIT - Moved to top comment