Add Status field to PassphraseInfo to indicate if algorithm can/should be used.

Values for Status are:
 * Supported   - implemented and no known issues.
 * Obsolete    - no longer recommended for use.
 * Unsupported - not implemented, but not obsolete.
Extend PassphraseInfo to return information for common crypt algorithms.
Add header identifying project version and license.
Implement cfPassphrase as Coldbox plugin.