DeleteToken - performs all the logic to implement the `galasactl auth tokens delete --tokenid xxx` command.

GetTokens - performs all the logic to implement the `galasactl auth tokens get` command.

If a JWT only has less than a certain time left before it expires, don't use it.

Expect the pattern: letters and numbers dashes (-) and underscores (_) + ensures a non-empty string ^ matches the start of the string $ matches the end of the string.