John Jolly 8ea20cd205 Add output for threadcount and key generation time to cmd/genkey
This change is to display information about the key generation process.

Specifically, two bits of information are now displayed
 * The number of threads created to search for keys, and
 * The time taken to generate a successful "next best" key
2023-10-21 18:21:47 +01:00
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2023-05-19 20:57:14 +01:00