Console: bugs in API key commands

Add:

• expiration should be optional argument when description is specified - missing -e is OK
• unhandled exception when the date is invalid - e.g. 2020-13-01T00:00:00Z+01:00'
• empty string is an invalid date
• missing parameter for API key output without formatting

Delete:

• when nonexistant ID is specified in argument, the command should exits with error message and return code

Edit:

• expiration should be optional argument when description is specified and vice versa - missing -e XOR missing-d is OK
• unhandled exception when the date is invalid - e.g. 2020-13-01T00:00:00Z+01:00'
• empty string is an invalid date