Add a sanitize method

[jeffmaury]

Would be good to share a sanitize method that would:

• replace occurrences of current username
• replace occurrences of current user home path
• replace occurrences of IP addresses
• replace occurrences of email addresses

[jeffmaury]

Initial implementation: https://github.com/redhat-developer/vscode-project-initializer/blob/master/src/telemetry.ts#L38