Add privacy statement

[dtivel]

[clairernovotny]

Can this be behind a command line parameter, like --privacy-statement. If we don't already have one, we should probably have a --version as well.

[dtivel]

System.CommandLine automatically provides version functionality.

C:\>sign -?
Description:
  Sign CLI

Usage:
  sign [command] [options]

Options:
  --version       Show version information
  -?, -h, --help  Show help and usage information

Commands:
  code  Sign binaries and containers.


C:\>sign --version
0.9.0-beta.22615.2+c0bc753fe67ef73a9a56483e7e66a7346fde7e83