Modify releaser script to update versions.json

Ideally
the releaser script should

• Prompt user to ask if this is a security release
• Prompt user to ask the status of this majorVersion (answer should be one of "lts" "eol" "stable" or "testing")
• Append new release to versions.json file
• Alter status of majorVersion if needed
• If we are releasing a brand new stable majorVersion, offer an option to change the status of the old one (versions.json shouldn't contain two majorVersions marked stable)